Help! Cramps + sore breasts, NOT on period

So my partner and I have both had an extended weekend and have just been going at it, as you do. For a couple days I've been having semi mild cramps as if they were period or pre period cramps and today my breasts have just started getting a little sore.

This is definitely not due to having to go to the toilet anything and i had my period under 2 weeks ago. Although I'm on the pill and should ultimately be protected I can't help but but think this could be from early signs of pregnancy... however am hoping it is possibly just from ovulation??

Thoughts and comments please and thank you :)