Unusual shipment gain...?

I have other been withered...but I fell ill and have 2 kidney stones removed, which I actually lost lot of shipment from. Then within a year, I gain over 20 lbs. I also switched my birthcontrol to Yaz. My stomach and thighs, is where I am seeing the bulk gain. Can someone tell me why, I am getting hold of this weight. How do I win back to my conventional self?? Without knowing your age, I am just betting that it is this Yaz stuff.
diabetes