It could be the start of the menopause ...or not. I am a few years older than you and have had similar problems. I would definitely go to the doc for a checkup - especially if you are flooding or the bleeding doesn't stop. There are ways they can help depending on what is happening to you including:
- progesterone can help if your body isn't producing enough and can control bleeding
- a D&C can sort out overgrowth of the uterine lining
- the mirena coil could be used to control overgrowth of the lining & will reduce if not stop bleeding altogether
The boob thing - yeah, that another of nature's "gifts". No harm to get that check out too. Again, if the problem is unopposed oestrogen then taking evening primrose oil can help stabilize oestrogen levels in the breast tissue and this can help.
Don't just suffer & soldier on...we girls tend to do that and it'll just wear you out.
Top tip: make sure you keep a diary of gynaelogical events - when it starts, when it stops (fingers crossed), how heavy etc.