Spotting! Help!

I'm so scared this is going to be another miscarriage. I've had nothing but super faint positives the last week. I'd be about 5weeks and I'm over a week late on my period. Because all my test have been faint positive, I'm afraid something wrong. I meet with my midwife Tuesday. I got up this morning, feeling fine. I went to the bathroom and when I wiped it was bright pink blood. I haven't had any cramping. I just need some advice. My boyfriend and I had sex last night, could that have irritated my cervix?