Discharge

Hello- I had some tannish discharge yesterday and today and I was freaking out. 7 weeks 4 days saw a healthy heartbeat on Monday (145 at 7 weeks 1 day). I had a transvaginal ultrasound on Monday and is it possible the ultrasound caused this. It almost made me regret the ultrasound as the woman was a little rough at one point I remember it hurting. I do feel like there was possibly a tinge of pink in the discharge in the beginning. Anyone have this experience?