Ladies who are in perimenopause...?

I'm 42 too but haven't noticed a change in my cycle yet. However a few years ago I had the problem that you are experiencing. I went to the doctor in the end and it was diagnosed as cyclical mastitis. There's not alot they can do other than experiment with contraceptive pills. I got myself some 1000mg evening primose oil capsules and it went down after about 2 months. Might be worth a try though do read up on recommended doses on evening primose oil as I seem to remember reading something subsequently that too much is bad?