Pregnant or not?!

I had sex a month ago and it was protected with a condom at first then he took it off after but we were still having sex after he took the condom off. I was supposed to get my period yesterday but it didn't come. I am feeling more tired, my breast (nipples) are very sensitive. And I am bloated a little bit, well I think it's bloating. Should I wait to see if my period comes or do another option..