Period

Here’s a little bit about my period. Before I started bc I would always go through a pad and tampon every hour for seven days. Finally got on bc, was on the pill and I liked how it affected my cycle. I was able to control it too, was never good at taking it all the time or missed it completely. So I decided to start the shot. I’ll take my third shot next month. So at first I knew it would take time for my body to adjust. The first period I got lasted three weeks, didn’t think much of it. Went two months without a period. My period started on the first of January, today is the 24, I’ve been on my period for 23 days. Has anyone else experience this? Do I need to change bc forms?