Am I pregnant? Boyfriend is in the military & I’m scared.

My boyfriend and I had sex on Dec. 25th while I was on my period, used a condom. Then again on January 2nd, also used a condom. He didn’t cum inside me at all, and there was no mishaps with the condom either of the times. Now my period was supposed to come on the 23rd, it is now the 29th! What are the chances that I’m pregnant by some crazy happenstance? I swear that semen never made contact with my body, but I’m just so worried now that it’s so late.

I also have lost about 10 pounds since the 2nd, so could that be why my period is late? When do I know whether or not I should take a test? My boyfriend is in the military and I’m so scared of being alone with a baby while he’s in another country.