What Causes Stomach Cramps,sore Breasts,dizziness And Headache?

Hi, I think I may be pregnant, although I have already taken two pregnancy tests 5 days in to my last period.... today makes one week since my missed period. I honestly do feel pregnant, idk if it s in my head but I feel like I can t even lie on my stomach because I know something is up with my body, Ive never felt this before. I have had some white discharge, no sore boobs (only the week of what I thought was going to be my period, June 11) stomach like cramps just minor nothing big, I feel like my period wants to come down but it doesn t, back aches, sometimes a little dizzy and or headache but just minor, constipation, really gassy, and frequent trips to the restroom, I keep peeing a lot. Should I wait still to see a doctor or take another test? I bought the dollar store brand test... Should I wait next month to see if my period starts? (July 7?) Please help.