Blood tinge discharge 7 weeks

I have blood tinges in my discharge, called nurse they said to come in anytime today for blood work. I had sex two days ago that gave me light pink blood spotting but there was nothing at all yesterday. And now today I’ve got this and I’m so worried and can’t stop crying I’m supposed to be 7 weeks today. What do you all think? I have had no miscarriages, one healthy live birth, not overweight..taking prenatals..no drinking or smoking. Do you think miscarriage is coming?