Osamenor, thank you so much for the reply. That brought a bit more clarity to things. I was under the impression that the Saturn return consisted would not be done until it exited the natal sign. So to get this right, I am now dealing with an 8th house transit ?
Any planetary transit, including Saturn return, is at its strongest from when the transiting planet gets within about 2 degrees of it until it moves farther than 1 1/2 to 2 degrees away. So your Saturn return was happening when Saturn was between, approximately, 1 and 5 degrees Sagittarius. That happened three times between about a year and a half ago and roughly a year before that. Saturn crossed over your natal Saturn, got to the middle of Sagittarius, turned retrograde, and returned to your natal Saturn again as it retrograded into late Scorpio. Then Saturn turned direct and crossed your natal Saturn again.
Because you have Saturn so close to your DC, you would've felt the transit earlier, as Saturn came within orb of your DC. By the time Saturn entered Sagittarius, even before it got within 2 degrees of your natal Saturn, it was transiting your DC. And right before it got to your DC, Saturn squared your sun (28 Scorpio to 28 Leo is a perfect square!). So you would've felt what you probably chalked up to Saturn return well before you actually had your Saturn return.
Saturn is currently retrograde again. It has already squared your Jupiter, and will again during the retrograde and again after it goes direct in August.
But what's really coming up for you shortly is something even rarer and more powerful: at your upcoming solar return, there will be a total solar eclipse right on your sun. If you live in the US, it will be seen where you live (whether or not you're within the path of totality), and eclipses seen where you live affect you the most strongly, even more strongly if they happen on a sensitive point in your chart.
This is likely to be a highly transformative time for you. Whatever has happened during all these Saturn transits, consider it preparation for what's coming. That doesn't necessarily mean you'll have bad experiences. That does mean you'll have life changing experiences.
If you want some comparison, think back 19 years. That was the last time there was a solar eclipse in about the same degree as the one that's about to happen on your sun. You wouldn't have had all those same Saturn transits right then--the last time Saturn transited this part of your chart was when you were a baby and toddler--but what happened for you about 19 years ago? How did it change your life? Have you seen any similar themes recently?
What Saturn brings us during its second cycle through our chart is a chance to mature and have some say in our own destiny. For the first 29-30 years, Saturn transits activate mainly energies that were set in place before we were born. After your first Saturn return, Saturn transits start bringing up more of your own karma. How you responded the first time around may be up for renegotiation, possibly with a different outcome.
Based on where in your chart Saturn is transiting and which planets are being transited where, I would guess that one or more of these themes are up for you: partnership, others, shared resources, inheritance, friends, travel, education, long term plans. Maybe home, family, land, with your fourth house sun.