Plan B

i took plan b on march 29th due to an unprotected mishap, and got my period on april 5th, two weeks earlier than it was planned (april 18th). Its been two weeks since my “plan b period” and i was due for my real period 3 days ago. My breasts are super swollen and tender and ive been feeling fatigue for the longest time, plus a late period. Does anyone know if this is just my body reacting to plan b and that because i had an early period it restarted my whole cycle? Or could i actually be pregnant and should test for it?🤔🤔