Bright red blood 3 days after Period

Daniela • Kasumi's Mommy 💕💃🏻
What could this mean? My husband and I had sex. I went to the restroom (he did cum in me) & wiped it was bright red fresh blood. I stopped my period 3 days prior. Anyway, day 4 & the cervical mucus is brownish. Is that considered spotting? Could i be pregnant? If not what could be happening? Help please! Im sooo confused.