little worried? 7 weeks today


I just used the bathroom and when I wiped, I had thicker creamy/egg white texture cm mixed with some bright red and brown lines through it. I haven't had any cramping. I had sex about 3 days ago and had some light pink spotting the day after. Could it be from that? or something more serious I need to worry about? after a missed miscarriage in January, I am really paranoid. We saw the heartbeat last week at my ultrasound at 6 weeks (baby measured 5 weeks 5 days). it was 102bpm and the tech thinks it started that day or the day before.