Bleeding after sex or no?

Jamesha • One 6 year old, 2 MC, 1 ectopic. Hoping for a baby soon with my husband.

How long after sex did you bleed during pregnancy? I bout 5 weeks and I've had spotting on and off for nearly 3 days now. It didn't start until a few hours after sex got bad the next day then stopped, started again and then turned into brown spotting and is now gone I think. Is that normal or should I go to my doctor asap?