I think I'm about 4-5 weeks pregnant I donated my eggs on the 7th November I went striaght back on the pill
I then had sex on the 14 th nov my period was around the 24th nov
I then had sex with another partner on the 8th dec
I've just done a pregnancy test today as my period has never started and it's positive

Congratulations.

Congratulations.

Thanks but I meant to put who's more likely to be the father

Impossible to tell with any surety as the dates are so close.
The ONLY way to determine paternity would be from a DNA test.