Hey there me and my girlfriend was having sex and the condom split, I have a condition where I'm most likely to be infertile as I have an extra female chromosome. But the jizz went in her.. and well 3 - 4 days after intercourse she's has really bad belly pains, and hot temp not everyday just bad belly pain for about 4 hours and hot temp.. She went to the toilet and this browny red colour blood came out and it was thick, wondering if you could help us if she could be pregnant like are they the signs are not.. thank you in advanced

Honestly, going by just this post, sounds like PMS.
She will have to wait a few weeks and get a test.