Spotting after sex at 15 weeks

Megan • Baby girl 22.01.19💗

So last night my oh and I had sex, was a little on the rough side but not violent, anyways after I get up to go to the toilet and there was some red blood, not a lot at all and tmi but was mixed in with semen so was stringy, going to the toilet a few times after there was still a little blood, then this morning everything was clear but I’ve just gone to the toilet again a few hours later and there was spots of blood, I did phone the emergency midwife centre when the bleeding started last night and they just told me to keep an eye on it and if I was to get heavy or have cramps to call back but she said she’d get a midwife to call and come check baby’s heartbeat but I’ve not heard anything from them, I can’t stop worrying. Has anyone had this and baby was fine?