4 weeks today- anybody feeling like crap this early on?

Mary Beth
I just found out yesterday that we are definitely pregnant, but I'm having symptoms like mad! I had no appetite yesterday and food smelled bad and the thought of it made me want to puke. The gas pains are the worst I've ever had, head aches on and off, and insomnia. Anyone else getting these symptoms this early? It's like my body just jumped straight into this pregnancy at full blast lol.