am I pregnant ?

I don't have sex a lot with my boyfriend maybe a couple times a month. My period has never been this late (a week late) and I have not been very hungry and I stay feeling like I have to throw up and it's so hard to fa asleep. I haven't had any spotting or any cramps at all. I normally have cramps before starting my period , nothing. He did cum inside me and it was unprotected sex about three weeks ago. I just need people's opinion. 😪