What Causes Sore Breasts And Stomach Cramps?

I have not been on the pill since Christmas.. My partner and I had unprotected sex right through ovulation but he did use the "pull out method" I always get cramps around ovulation but have had them everyday since.. Everytime I have a cramp I need to go to the toilet.. My boobs are sore too.. I'm not due for my period till the 6th of next month.. Not sure what's going on.. I'm not sick but I'm tired but I've just come back from a holiday so I put being tired down to that??