For background info I had sex with my bf two weeks ago and last week on Tuesday, My period is due in five days, we used protection everytime, I’ve been so tired lately snd having headaches or dizziness, I’ve been having cramps but no blood, and today for the first time I had loss of appetite , I hate esting in the mornings but this is the first time I really felt nauseous from the idea of eating but didn’t throw up, can I be pregnant ?