good morning mama's, I have a question for mama's who have had babies.... last night my husband and…

good morning mama's, I have a question for mama's who have had babies.... last night my husband and I had sex, and this morning I've noticed my discharge is pinkish in color and there is sometimes blood in it... I haven't had this the last times we have had sex since having my daughter... does anyone know what it could be?? I am probably freaking out over nothing but it's completely new lol I never bleed after sex except when I'm pregnant