From your detailed history, it does not seem likely that she is pregnant.
In other words, NO your partner does not seem to be pregnant.
For best results, do consult with your gynecologist on the ground or use the premier 'ask-a-doctor' feature on this website to speak to one.
Do a serum/blood Bhcg test that will tell you clearly if pregnant or not together with a titre. You may additionally go in for an ultrasound
scan if you wish.
Please do practice safe sex
& use a condom that will help prevent both STD's & unwanted pregnancies instead of trying to close the door after the horse has bolted.
Wish you & your partner continued good health & Godspeed!
Dr Praveen Rodrigues MD