Orthotrycyclin lo symptoms and conditions

I have been taking BCP since I was 18. I started w/ Aleese, Yasmin, Orthotrycyclin-Lo, Ortho Evra and the last being Loestrin24Fe. The sad part is that I can't remember what/if any side effects I had while taking those prior to Loestrin24Fe. Unfortunately for me, I have managed to gain 30lbs in the last 5yrs and I cannot seem to get rid of it. Of course the gyno said it wouldn't have been the BCP, but I would like to believe I didn't make myself a fat ass. I was taking Loestrin24Fe for 2 years and can't say I noticed too big of a change while taking it other than the periods being shorter, but they were still very heavy. But my acne has started to get worse the past year. In May I went to the doctor for my migraine's and skin/hair (too oily). After running blood tests it showed my thyroid was pretty low and had room for improvement. I was prescribed Maxalt for my migraine's and 30mg of Armour (thyroid medicine). I went back at the end of June and we upped the Armour to 60mg because I haven't noticed a difference since taking it. She also suggested I switch my BCP to Yasmin as it's been known to help with acne problems. Today was my 2nd day on Yasmin....and obviously it's too soon to notice if/what side effects will bother me. I just wonder if maybe I should take a break from BCP all together and allow my body a chance to breathe. I really hate the thought of having that longer period again but I'm going to have it with Yasmin anyway unless I choose to start a new pack early every month (to keep same schedule as Loestrin24Fe). Advice would be helpful :)