I think I'm pregnant??

Madison
Okay so I'm having a lot of symptoms of pregnancy but I'm not 100% certain. Me and my bf had sex on April 25th but I had my period the following weekend. It was a lighter and shorter period than usual. 
​But we had sex again while I was ovulating (last week). I'm not sure if its too soon to have symptoms but this has what had been going on--
​--morning sickness (5-6 different days since April 25th) along with a lot of days where I thought I was going to get sick but didn't 
​--I'm extremely tired all the time no matter how much I sleep
​--Cravings (ex: ice cream, chocolate, Mac and cheese, shrimp)
​--headaches
​--moodswings
​ --wanting to eat all the time but feeling sick after I do
​--and now, my boobs are hurting! 
​I'm not supposed to start my period until next Thursday so I'm not sure. 
​I've also taken two tests and both have come out negative but I think it's too soon to tell.
​And also, I'm not sure if this means anything but I had a dream that I was pregnant? 
​Help! I need advice!