uterine lining & pregnancy?

bit of back story:

i’m 7 weeks pregnant today & found out about my pregnancy around 3 weeks. i ended up being very sick with a uti about a week ago. i’ve taken a LOT of tylenol bc of how sick i am. i’m on an antibiotic. i’ve had minimal bleeding in my discharge/cm. nothing that i have been worried about. my husband and i just had sex for the first time since being sick a week ago. after having sex we noticed like a chunk of uterine lining on him? is that normal at all? should i get that checked out? my ob & i chalked the spotting down to issues from UTI. but i’m worried ab this. it was like the size of a chocolate chip & no blood.