I Think I Am Perimenopausal. I'm 54 And Have Always

I think I am perimenopausal. I'm 54 and have always had regular periods. After having a steroid injection in my shoulder I was warned that it might cause menstral changes. In the last four months I have had bleeding every 2-3 weeks usually lasting two to three weeks.
My last period has been continuous for just over two weeks and I have some discomfort in my right side.
Do I require treatment ?