Help with Period Issues!

Kim
I have been on birth control for 10 years or so. My husband and I are just now ttc. I went off of my birth control for the first time in 10 years and just had my first period. Usually my periods are 6 days. But it seems like it's not stopping this time. I'm not sure if it's because my birth control helped regulate before or not. I did my 6 days and it seemed to stop but when I was intimate with my husband it came back and I am still spotting 3 days after my period usually ends. Is this normal? Will my body figure out how to do it eventually? Not sure what to do so any advice or thoughts are much appreciated.