What Are The Chances Of Getting Pregnant Without Ejaculation?

I had sex about a month and a half ago. The condoms that my partner and I used didn't fall off or break. A week after we had sex I got my period and it lasted my usual five days. I am supposed to get my period in one to three days. I am having my usual back pain, breast ache and mood swings that always come along with my period. And I keep feeling like I'm close to getting it, but everytime that I go to check, there is nothing. I have been VERY stressed an worried that I could potentially be pregnant, even if nothing happened to the condoms. What are the chances that I could be pregnant?