Talk

Congratulations! Does it matter? Or is it a case of two different partners? <nosy>

If you ovulated on the thurs surely conception is going to have happened fri.

2 different partners

Definitely matters then. If you ovulated Thursday I'm more likely to say it was Tuesday's sperm that hung around to do the job. An egg can sometimes only last 12 hours and so you might not have had a viable egg still floating around by Friday. but I think this is a case of honestly seems like it could be either.
Good luck with figuring it out from here re paternity testing if needs be.

I think you can get a dna blood test while you are pregnant, works in the same way as the harmony test I think.

It would have to be private and I have no idea how much it costs but that would tell you definitively before the baby is born.