Advise please ladies

Desiree

I started a low dosage of birth control 1/30/2025 and since then my cycle hasn’t been consistent I’ll have my period for a week or longer. I missed a pill recently and had unprotected sex. It’s been 9 days since unprotected and Friday had pink discharge while wiping but it stopped till today Monday and the pink discharge is back. Could this be a sign of implantation or could it just be my birth control.

Thankyou so much.