Is this amount of bleeding after sex normal?

My period ended yesterday. I still had very faint streaks of blood when I wiped, but nothing on my pad/underwear. My husband and I had sex last night, and it didn’t seem to be overly rough, but this morning I saw what appeared to be a stringy blood clot when I went to the bathroom. I don’t know if it’s leftover blood from my period that showed up after having sex, or if it’s because he ended up going too deep and irritating my cervix. Has anyone experienced something similar before? Should I be concerned?