Sex this morning, now brown discharge😮

Anastacia • Momma of (almost 3) I have a 12 yr old boy Michael, a 6 yr old girl Serenity:) and another girl comin' Addison Kaydence
Tmi- but haven't had sex in at least a week and a half or two, finally did this morning, didn't notice anything afterwards and didn't really hurt (no more than normal soreness- husband is well endowed) so now I go to pee and wipe all assuden there's brown, like not gushing just tinges so far... If I pry for more it stays brown so should I be worried?!?i am always over paranoid and don't wanna rush to ER for nothing..