I dont feel pregnant...

Soooo.. A couple of weeks ago, I started feeling super tired and nauseous at times. I kept thinking it was due to working alot and just being worn out by my two boys (one 4 and one thats 1).. So I finally figured something was up because my period never came.. Took a test and it was POSITIVE (mind you i took it at a claim jumpers restaurant bathroom).. I am now almost 12 weeks along. I have had two boys already and with those boys, I was ALWAYS sick and tired. I could never hold down food! With this pregnancy? I dont feel nauseous all the time. Only when I dont eat. I got so scared that I took a second pregnancy test just to make sure I still was.. 😩 This pregnancy is just so different and its scaring the hell out of me..