Bleeding @ 6weeks

So on Monday I went in bc I was bleeding (5w5d) no clots or tissue but had turned from brown discharge to full on red blood. They saw the little bean and a heart beat. they didn't see where the bleeding was coming from so I was told no sex, working out or lifting much. The bleeding stopped.
 Here we are Friday (6w1d) I have followed the instructions and I have the brown crap with some dark red in there too. I don't go back till the 1st and honestly I don't want to call bc I feel like the vaginal ultrasounds are making it worse.... But this is really worrisome to constantly see.
Anyone else have this now or in past pregnancies? I didn't spot once with my son so this is all new.