I came to the conclusion myself, luckily, that Yaz was causing my weight gain. After having back surgery in April and gaining not a pound while not working out, I have been on Yaz for four months and I literally have gained 10 pounds in the past three weeks, my boobs hurt like when I was pregnant and I have even been lactating a little! Ugh! Sex drive...gone. Headaches, lack of motivation, could sleep ALL day. I took Yasmin for years and years with no problem at all. I recommend against this method of BC if you aren't taking it for a specific condition. It's just not worth the hassle OR a new wardrobe! I'm almost 40 years old, have been working out since I was in my teens and have not weighed this much since I was pregnant. I know that the trainers in my gym think i'm some kind of closet eater or something! I'm working and working and getting fatter!
The symptoms all are things I experienced while pregnant with my son - 18 years ago! If I wanted to feel preggers, I'd get preggers! My new husband probably thinks I'm letting myself go now that I'm married. Luckily he's very sweet and understanding. It was his idea to change my BC back. Call you doctor. Now!