People at 4 weeks pregnant what was your symptoms and others help *10 points* unsure if pregnant?

Hey well this is my situation I have had period pain on and off for a week just twinges that are here and there like my normal period pain.I had with my boyfriend 3 weeks ago and he wore a condom but then took it off AFTER and put it back in about 1 min after with out a condom on and we didnt have full blown till he come just say 2mins max? I was due on my period this weekend and I havent came on I dont have PMS or Anything except these odd twinges.Last week I had a red bloody clear mucus only a few spots inside the mucus all Im getting now is white discharge no period signs.My downstairs is swollen too theres no way I have an infection me and my boyfriend have both been checked?Do you think I need to worry or that I could possibly be pregnant?Im not stressed or anything so that wont delay my period!I have also been really constipated and I had like a week after a period and the week after that so when im ovulating really