Period or pregnancy

Sore boobs feeling like I'm going to puke but don' hurts to sleep on stomach random pain in lower abdomen on both sides but at separate times last period started august first ended on 6th.. I had sex around a week 1/2 or so ago and he did get some inside me so idk if I'm going crazy or what but first response thing online said it's two days too early to take their test so I was wondering if anyone had anything similar occur or if I'm just going crazy because I feel like my mom jinxed me.