Is it semen?!!! I can’t stop freaking out over this!!!

So I had sex today and we used a condom and he also pulled out like a solid 3 seconds before he stared ejaculating. Afterwards , about two minutes after I sat up there was a wet slimy whitish dischargey patch under me . I also checked the condom for holes by filling it up with water and there were no holes so it couldn’t have been semen. I finished my ovulation day yesterday so do you reckon it was just cervical mucus or natural lubricant?