opaque white discharge after sex

I had sex for the first time last Wednesday and we used a condom, when he finished, I felt something and I checked and I had an opaque white discharge, I’m assuming that was my ejaculation? sorry I know it’s a stupid question but I just wanted to check and ask. Also we did check the condom and there wasn’t any holes or rips in it so I’m pretty sure it ruled out being his ejaculation, I’m just not sure what it was that I had when I checked. It would be great if you guys can answer cause even tho the condom didn’t break idk why I’m still stressing