Old Blood or BrownDischarge?! Nervous

Hey guys! So two Friday's ago my husband and I had sex- after there was bleeding.  I know that can happen but went to my dr anyhow.  Everything looked good, and baby had a HR.  The Wednesday after that happened I started spotting brown here and there when I would wipe.  The last two days it has been heavier, but not enough to cover a panty liner.  I've seen a few small clots.  Anyone had any experience with this?  I'm just over 9 weeks since my LNMP.  Thanks for any help... Starting to get a little stressed!