Jelly blob after sex

Has anyone ever noticed a clear jelly blob after sex. The other day i noticed it on my man after sex. I grabed it and it was thick like jelly/gelotan and it didnt stretch it broke in my fingers.... What could this be? My cm his sperm? Or what?

I read somewhere if your pregnant the cervix will close and wont allow further sperm to pass so they combine with ur cm and turn into jelly...

Anyone?

Ps. I dont think it could be EWCM because it wasnt stretchy. It was clear n thick like jelly and it came apart when i stretched it.... Isnt it supposed to be stretchy