Concerned, somebody please give me advice!

Okay guys so I had my period this week and it didn't even feel like a period. I only "bled" for like 3 days maybe and it was barely anything, I was able the wear a panty liner like the whole time. I've been on birth control for about a year and a half and I skipped my last period to go on vacation so I was expecting this one to be heavier. Then I had sex with my boyfriend 2 days ago and the period blood stopped, and there was none during sex. Idk why I'm so nervous about this because it doesn't sound like anything is too wrong but I just need someone's advice on whether this is normal or if it's concerning. Please help!