There is clearly a negative connection to Mars shown in the natal, which seems to connect with current health problems connected with sports/body building:
-Mars is affinitive to sports, muscles, intense physical exercise, muscular work out, etc
-Mars is posited in the 6th natal house (health problem potentials) in Sagittarius (Sagittarius is the sign most liable of all signs, to physical accidents and injuries, physical overstraining, according to the researches of Charles Carter)
-so Mars/muscular system in Sagittarius physical strain in 6th house of health probelm susceptibilities.
Now, note that in the background the OP stated that his problems began after a session of body-building; and note the above posting of another exacerbation of problems from the body-building session the OP mentioned yesterday (posting of April 9th) I submit that this is clearly an etiological relationship with Mars.
In the natal, Mars is conjunct Mercury (nervous system and mind), and notice how the ramifications of Mars are NOT felt in the muscular system, but rather expressed through the nervous system and mind!
Looked at in declination, the Mars-at-the-source-of-problems hypothesis is further strengthened:
-Mars is P of decl with:
a) the Sun: OP's vital force
b) Moon (just 2 minutes beyond Mars P orb): OP's body in general, and emotions
c) Uranus: OP's electrical system (bio-electrical system), connected also with sudden conditions, and unusual and hard-to-diagnose conditions, which characterize the OP's reported health situation
So, the pre-set of Mars susceptibility as the etiological factor in this case, seems apaprent: I am saying that Mars is the culprit here, and that overstimulation of the Mars energies, has set-off a chain reaction of unusual, functional disturbances throughout the chain of connections (conjunction and Parallels) Mars has (ie, with Mercury, Sun, Moon and Uranus)
In the background information, OP mentions high sex drive and sensitivity in this area: and we find Scorpio-disposited by Mars-on the 5th house (sexual pleasures, etc), Mars connected usually with very high sex drive, and Scorpio with intensity in this area. So here we find Mars-and its connections-at the root once again.
One natural (non-drug, freely available) remedy affinitive to the ill effects of physical injury and over strain (such as body building sessions) is homeopathic arnica montana (in the DH6 dilution as drops), as antidote to physical overstrain, especially in a Mars-sensitive constitution. High potency arnica montana (CH200) might be indicated as an etiological remedy where all the problems seemed to have started from physical overstrain. Remedies for the various ramifications of Mars via its conjunction and Parallel connections to other planets, manifesting as a variety of vague but intense functional, spasmodic like phenomena, would include a wider group of homeopathic remedies such as cuprum metallicum, phosphorus, phosphoricum acidum and even tarentula hispanica, as possibilities.
Regardless of natural remedy possibilities, it seems clear (at least to me) that Mars and its connections, is at the astrologically causal root of the (medically undiagnosed) unusual health situation reported by the OP.
Note: Other Mars connections:
a) Mars is atmakaraka planet in the natal chart, meaning it is the most important single planet in the chart according to Jaimini astrology
b) the ascending degree is in the Vedic term of Mars, showing more Mars connection with the essence of the chart
c) by simple symbolic progression, progressed Mars is currently between natal Uranus and Neptune and is in progressed conjunction with both of these planets