New to this

Vikki

hey everybody i’m new to TTC, i’ve been off birth control for almost a week(last pill was taken on 11/10/2020)and have been trying with bf. my periods are very regular I get them 27th or 28th to the 1st of the next month but we recently had sex from the 10th-15th (these are my ovulating days) . Yesterday I started bleeding and have had terrible cramps and it’s a little concerning and i’ve been searching all weekend on what it could possibly be. Would it be withdrawal bleeding from coming off the pill or something else? will keep updated as well :-)