usual 7 day period ends two days early🤔

Woodlane
I had a morning appointment with my gp this past Friday. I found out I had a tilted uterus and wanted to figure out how my husband and I would go forward trying to have baby #2. My son is now 3 and I don't want my children too far apart in age difference😩so me and hubby had unprotected sex when we got home and immediately after going to the bathroom while sitting on the toilet I had very light pink spotting. My period came😔but I've noticed it being irregular. The first day was very light, the next two days it was heavy-medium and the fourth day was light again. The fifth day ended with the usual dark brown discharge. But My period ALWAYS last 7 full days and really heavy no matter if I'm stressed/depressed/working out hard🤔so there's no way I could be pregnant. My always period comes a day earlier (sometimes 3 days earlier) than the previous month, so I know what to expect. This time I'm confused😂😩😭I'm probably just being paranoid as usual😪