hi everybody:)

me and my boyfriend had sex during the week i was ovulating and i been feeling nausua one of my boobs hurt and i feel super tired and my lower back hurts.. my body dont feel the same anymore :/ and i took three HPT and all negative and i am 9 days late on my period.. i decided to go get check if i was pregnant and im still waiting in the blood results..can i be pregnant or whats up??