Last day of my period was April 27th, my next period is 13 days away from today(according to my calendar). I am on birth control and my boyfriend does cum inside of me everytime we have sex. For the past 4ish days, ive been SO nauseous, my stomach doesnt even hurt im just nauseous and have been throwing up, my nipples are also very sensitive. Could i be pregnant? It seems a little off to be to be showing "symptoms" this soon. But if anyone has any advice lmk!