Please help me!

Natalia

I had unprotected sex on saturday march 17th and again on tuesday March 20th. I was ovulating on Tuesday the 20th when i had unprotected sex, i know this because i took an ovulation test. I was supposed to get my period on Saturday march 24th, my period never fails to come on the exact date, i am almost 1 week late now. Could i be pregnant? I am having cramps daily, i have been urinating a lot more than I usually do, I’ve been nauseous and getting little headaches, i feel very very bloated. Help me please! I have also been getting really tired and sleepy lately, and been getting really horrible hot flashes.