Could Cramping, Bleeding, And Sore Breasts After Using Plan B Indicate Ovulation Or Pregnancy?

Hi! I m a 21 year old female. I had unprotected sex a few times during the week of June 5th-12th but used the pull out method and took a plan b on the 8th and 13th just incase. My period began on June 2nd and lasted about 4-5 days. Now on the 16th and 17th(today), I have cramping and bleeding like I m on my period and my breasts are very sore and feel like they re growing a bit. Could I just be ovulating or could I be pregnant?