Tmi question

So this is going to sound really stupid probably lol I tried googling it but couldn't find what I was looking for. So I'm 12 weeks pregnant and last night me and my partner had sex (the first we've had it from finding out I'm pregnant, we don't usually like sex when I'm pregnant but was just in the moment) he came inside me also. We've 3 kids together so I'm not completely clueless usually but a lot of the semen came out last night as it does but today I was going to the toilet and noticed jelly like globs of yellowish tinted stuff in my knickers it wasn't runny or anything. It's the first time I've ever experienced that and just wondering could it have been left over semen or my own discharge? Never seen it before any other time we've had sex.