I think for most women in this world, you're going to like this side effect. I have seen a reasonable change in my breast size. I have been on Yasmin since Nov. 06 and I haven't had any problems with it at all. Also, I haven't experienced any weight gain at all. During my periods, I tend to have more water retention than I normally did before, but only during my period, and we're all bloated anyways at that time, you'll just notice you'll be using the bathroom more often. Overall, I love it, If you don't like water weight, I guess you can try something else, but I'd prefer water weight gain over regular weight gain which I had experienced from using other birth controls. Good luck!