BC and spotting?

Aja • Aja. artist, bisexual, single ❤️
So I started birth control around a week ago and this morning I noticed I had brown discharge. Now me and my boyfriend had unprotected sex on the 24th and 26th but he didn't cum in me. I wanted to know if anyone else has/had brown discharge when they first started the pill or if this could be a sign of pregnancy?