Unemployed and pregnant?

Hi dear readers,

I’ve got a question weighing on my mind and maybe you can help me. I had sex 3 weeks ago (with a condom), but we were so rough with it because it was way too small. Yesterday I was really stressed because I was supposed to get my period this week and my body felt weird. This morning I finally got my period, but I’m still having some pregnancy symptoms like food cravings, everything smells stronger, and tender breasts (normally I could kick a ball against them and not feel anything). Should I wait until my bleeding is over and then take a test? I’m not sure. It was also a one-time thing because it was a friend of mine and we don’t have a relationship.