Hopefully this isn’t too long but Ok so im 16 & ik alot of teenage girls have the “ i think i am” moments. So

This isn’t my first scare & I don’t wanna be judged my life is my life im just here for advice & answer. Long story short i had unprotected sex with my friend the 4th of feb not to mention it was 5 days BEFORE MY FERTILE DAY BUT IT WAS BETWEEN THE WINDOW & well the guy jus had this expression to make me think he you know ;) well a week after that i got a upper respiratory infection and went to the er. They took a pee test n i dont think they tested for pregnancy but it had only been 5 days since i had sex but i was very crampy & I assumed fertilization stsrted after a few days but anyway i threw up a few days after & i never throw up like ever i have a pretty durable stomach. Ever since & its been 2 weeks since the 4th ive been very nauseous and fatigue literally sleep all day n am always tired even when i sleep alot my nipples have gotten real big and dark and my nips are a normal size but ive been very nauseous moody n super tired n allat bloated. My last period was jan 28th I just really need answers n advice before I actually buy a test because this was so unplanned n not a good time because i wanna cheer my senior year & I obviously can’t being pregnant missing the season.