i have the same exact problem... i've been taking beyaz for abt 6 months now... it has been a GODSEND for my skin --i went from breaking out all over my cheeks and chin to having maybe ONE tiny pimple in the entire 6 months i've been taking beyaz. BUT... i'm a girl who has always cared a litte excessively about her looks/weight and the pill has caused me to gain about 8 lbs. i absolutely can't stand the extra stomach fat and puffy cheeks, but the clear skin almost makes it worth it.
i've been researching like crazy abt BCP and weight gain. i still can't truly decide what to do --quit the pill & try topicals again, or just deal with the extra weight & enjoy my clear skin-- so i started a little experiment taking only 1/2 a pill per day about 2 months ago (i'm not sexually active anyway), hoping this would minimize the weight gain/bloated feelings and still be enough to keep my skin clear. my skin is still clear but i don't think i've been trying hard enough to actually lose the lbs i gained, so i'm still pretty much 8 lbs over my ideal. i'm going to try harder to lose it and continue to take 1/2 a pill and see if i can maintain my ideal weight AND clear skin without constantly having to diet (i never had to diet before i started the pill). by the way, while i reduced my dosage, i am trying harder to drink lots of water, stick to a healthy diet with less carbs, sugar, salt, and dairy and consume more of the vitamins that BCP is known to deplete (vitamins B2, B6, B12, C, magnesium, zinc, and a few others if you google it). interestingly enough, the B vitamins influence your metabolism and energy, so you may possibly benefit from taking a B complex supplement, which i will be trying soon as well. i also drink green tea every night --i feel like it helps eliminate my bloatedness.
i'm also taking evening primrose oil to balance out my hormones while i "wean" myself off the pill i guess (taking 1/2 per day for the rest of the summer, maybe even 1/4 per day in the fall and possibly getting off of it completely by winter, when i can hibernate if i get bad skin again!) i'm not banking on the EPO to do much, but it has definitely given my skin a soft glow since i started taking it (and i didn't think my skin could get any better). i'm hoping the EPO will somehow positively influence the hormones that have been affecting my weight as well while i try to lose the rest of the 8 lbs...
so i think my plan is to ultimately wean off the pill and find a miracle supplement (hopefully EPO) or if not, a miracle topical, to keep my skin clear. if that's not an option for you b/c you're sexually active or whatever, your only option is to truly stick to a healthy diet like mentioned above (do more research on what suits you), try to fight the vitamin deficiencies caused by taking BCP (especially B vitamins), and exercise more than you currently do. these suggestions are just things that i found in my research --hopefully something will help.