Early pregnancy symptoms?! Need advice/Opinions

Lauren
So, AF is due 2/27, which is in 5 days. My husband and I had unprotected sex two days during my fertile week and a day or so after it ended. Yesterday I came down with a sore throat and had a low temp of 99.4. I've been having trouble sleeping for the past few nights, and this morning I had a severe hot flash, like the worst I've ever had. Also, today I have been queasy on and off, had generalized weakness and almost felt like I was gonna pass out. 
What do you ladies think? 
Early pregnancy symptoms or just sick?!