what the heck is going on..

so i just had my period it ended over the weekend.. ive been having sore breast for a while now since a little after my period ended just a dull ache, and diarrhea with literally everything i eat tmi sorry.. and the only time ive had this i was pregnant. i took a test w the shitty blue dye test just bc i had it. and as i watched the dye run i saw the plus sign faint but there .. could i be pregnant? even if i had my period

nothing unusual about my last period normal 5 day period