wondering??

Please help .. me and my boyfriend had sex on March 30 and I am on the shot ! in the end of February beginning of March i got my person and in January I didn't get it . well I still did not get my period this month yet and it's kind of worrying me we used a condom and we didn't see any cum on anything but inside the condom but we had a towel down and when we he finished he layed on it for a little and we don't think any cum came out of the condom but I used the towel to wipe up a little then went straight pee what are the chances of me being pregnant ?? PLEASE COMMENT AND HELP.