Help me please..!!

Mrs • I`m 31 w/2 daughters & a 1 son.. I have been w/my husband 13 yrs, but only been married 3 years
Have anyone else had any spotting first few weeks of pregnancy?? Like 4-6 weeks.. Dr said its rough sex, dnt worry.. But I've had 2miscarries && can't help but to think what if..