I think I may be in peri-menopause?

I have been having a variety of problems this year. As much as I hate to think it, I think that my irregular cycles may be caused by perimenopause. I have missed like 3 periods in the last 6 months or so. I am gaining weight no matter how little or how much I eat. My skin is breaking out for no reason. I am 33, 34 in january. I have not had hot flashes or anything like that. the mian thing that bothers me is the skipped periods. I have been VERY good about my birth control for the last 6 months or so, so pregnancy is not an issue. Has anyone had this kind of thing happen to them