Lots of brown in progesterone

I’m 6 weeks 3 days pregnant with the fertility clinic and am on baby aspirin and crinone 8 % suppository .. this is my third pregnancy with two previous miscarriages both blighted ovums. Has anyone else had this brown spotting before ? All other miscarriages never had progesterone before also still have my symptoms which before they would disappear as well as rise in hcg levels but any spotting scares me? Any insights ( the clumpiness is the progesterone)