Pregnant?

K
I've had unprotected sex on the 7th, 10th, and the 15th. The 7th and 10th were both my fertile week. I've been having heart burn, diarrhea, sore breast (with very prominent veins), cramps (they don't feel like pms cramps), and fatigue. Could I be pregnant? My period start on the 23rd and I don't plan on testing til I miss it but wanted y'all's opinions. Thanks!