Hello and Welcome Me40
Your description of symptoms sounds exactly like mine, only I was in my mid 30s - I had my kids at age 31 & 33). I started getting very long, very light periods with very painful boobs before hand. I was sent to have a D&C which resulted in my periods stopping completely. About six months later, and still no periods, I had a blood test that showed I was peri-meno and I started on HRT. Blood tests are not always accurate but it would be worth going back for another test in 2-3 months if things carry on this way.
Good luck. DG x