My period is late by 14 days.

I AM FREAKING OUT. I am a PhD student and I can't have a baby right now..I used a condomn when I last had intercourse and it did not tear. I sometimes ovulate for two months in a row because I am third generation and my grandmother is a twin, hopefully this is the case now. I am feeling super nauseous and I dont know if it is because I am so nervous or because I am experiencing symptoms.. I 100% recall that it was safe sex, I am taking a preg. test tomorrow morning, pleaaseeee pray for me that it all goes well..