Am I ovulating or am I pregnant?

My period finished on Saturday the 22nd. I've been experiencing cramping, sore breasts, nausea/vomiting, and migraines since before my period started. This period was very painful and very heavy, and I've read that with a painful period it might mean you are pregnant, but the chemical is too low to stop AF? I'm apparently ovulating now and DP and I have been having unprotected sex since AF ended. Am I being too hopeful? I suppose I'll wait and see til AF does or doesn't arrive (due next 12th April), but I just wanted to know if anyone has experienced this/if it's possible! Thanks ladies <3