Isn't it too early to be feeling like sh*t?

SA • Wife & Mother. Son & Daughter, toddlers. One year apart.
I NEVER had morning sickness with my son. I'm only 5 weeks now and I feel like I was hit by a dump truck. I've been vomiting, getting dizzy spells, unable to eat, unable to sleep even though I'm exhausted, crampy.. And the list goes on. I didn't think morning sickness was supposed to happen so early. Anyone else?