(Disclaimer: the following is intended only as an expression of my personal opinion!)
Brief astro-therapeutic analysis of birth chart and progression (simple symbolic progression: 1 year = 1 degree); Whole Sign Houses applied
+regarding the issues involved (female reproductive hormonal balance; mammary gland development), while Scorpio is, in a general way, always involved with endocrines (and the pelvic reproductive organs in particular), I take Cancer, the Moon and Venus as the principal indicators regarding female hormones, hormonal balance, and the mammary glands.
+in the natal chart we find Dragon's Tail posited in Cancer (possible inhibition of female hormonal development/balance);
-we find Moon in close opposition to Venus (possibly indicative of a basic "conflict" involving the female hormonal system and the mammary glands development);
-Jupiter adds its physiological influence (when strong) to develop things, to make things "grow" and fill-out in a healthy fashion; here in the natal, Jupiter is in conjunction with Venus (favorable for healthy development of the female hormonal/mammary system) however, it is opposed by our other key significator, the Moon (indicates delay/blockage in this healthy growing/developing process, same as Moon's opposition to key significator, Venus)
-the natal chart has heavy elements (earth especially, then water) in excess, and light, "easily moving", "free and easy" elements (air, and especially fire) in decided deficiency; this could indicate slower development or blocked or "sluggish" function regarding the female hormonal system and its physical ramifications
-finally, although in the natal the Part of Fortune placed in the 6th house of health-which indicates improved resistance to illness in general-we again find a hard aspect raying from the Moon-in this case, Moon is square Part of Fortune (partile square); when we further calculate from the Part of Fortune its health ramification (known as the "Manilius Health Imbalance Fortune", its placement indicating the nature of the tendency or susceptibility to certain types of health affections), we find it falling at 11 degrees Pisces in the natal chart, ie, partile conjunct the Moon!
Taking all of the above natal indications into account relative to the specific question we have regarding female hormonal balance/mammary gland development, it is clear (to me) that the macrocosmic "causes" of imbalance, deficiency, and less-than-desirable development have been pretty well identified.
Now, what about further developments in time?
+First, the Dragon's Tail has just progressed out of Cancer, liberating this significator sign of its malefic influence
-also, the Part of Fortune, at the 19th year, progresses into the hormonal/breast significator sign of Cancer (where it will remain for the next 30 years)
...these 2 progressed factors are highly benefic to the correction of previous hormonal imbalances, deficiencies, mammary development;
+Our important significator, the Moon, progresses into the fiery sign (and sign of beginnings), Aries, and into the foundational 4th house, in about 1 year from subjects 19th year (ie, when she turns 20); this "fires up" the Lunar qualities (like the female hormones, their production, balanced activating effects, balanced metabolism), and this benefic progressed influence will last for 30 years (until subject is 50)
+Our important significator, Venus, posited since birth in what we might refer to as the "sterile" sign of the Virgin (Virgo)-and weighed down by Virgo's earthy elemental quality (and Jupiter is here too, just behind Venus)-progresses into the light and airy Libra-and thus into the 10th house and into its rulership, at age 20 (where it will remain for 30 years); Jupiter (growth, development of glands) follows 4 years later: my interpretation here is that the hormonal system/mammary gland development will be freed up, move ahead, and development, and hormonal sufficency, will move toward physical manifestation.
In my opnion, the progressed state shows a soon-to-occur change toward balance and development; the progressed chart clearly demonstrates a definite, naturally-occuring trend in this direction.
(Now, based on the above, my answer to the specific horary question, about going back on birth control-for the purpose of hormonal balance-is clearly "NO": the progressed shows the already-occuring trend is for the hormones to become sufficient, balanced, and mammary development to progress as it is desired to, without hormone substitution therapy)
HOWEVER,
We still have the natally imprinted problem with:
-the Moon (opposition to Venus/Jupiter; square natal Part of Fortune; and most significantly, conjunct the Manilius Health-Imbalance Fortune)
It is my belief (experience, actually!) that non-drug remedies can be applied to support living systems to resistant and OVERCOME celestial influences (Paracelsus wrote, "The Wise control their planets; fools obey them")
Considering the significator planets involved, and non-drug remedies affinitive to them, as well as the area of health concern involved (female hormonal system, mammary gland development), the following herbal and homeopathic remedies (freely available, in most countries) come to mind:
(NOTE: the following is not intended as being prescriptive; it represents general astro-herbal/astro-homeopathic considerations only)
-Moon: homeopathic Pulsatilla 30x (attenuation of the Wind-Flower); regulation of female hormonal system; dose usually3-6 pellets on tongue, at time of New Moon, repeated each month
-Venus: the famous Ayurvedic female "tonic" Shatavari (capsules of wild asparagus root) comes under Venus-strengthening herbs; dose is often recommended as 1 capsule daily, beginning at day of New Moon and continuing up until day before Full Moon; ceasing during the waning Moon, and beginning again at the next New Moon
-Jupiter: the hormonal/mammary tonifying Saw Palmetto Berry comes under the Jupiter enhancing herbal remedies; dose is typically 1 (or 2) capsules daily , taken at the same time as Shatavari, and following the same New Moon-Full Moon repetition schedule.