I have 3 more days. your thoughts?

My breasts have been tender for the past three days and my period isn't due for another two weeks or more, idk anything about my cycle but I did have unprotected sex 12 days ago and didn't take any emergency contreseptives. I feel normal except my nipples are so sore I can barely touch them, also I was getting in the shower and my man pointed out my areolas went darker then lighter as they got closer to the nipple. Pregnant or just ovulating? I can test on the 4th of july