Yesterday i got up and had a small breakfast then about three hours later i was hungry for lunch and…

Yesterday i got up and had a small breakfast then about three hours later i was hungry for lunch and fixed it. Had supper about 5:30 and then about three hours later had an icecream snack since i was full from supper to eat it. Then about 9:30 i go to bed. About eleven I woke up and felt nauseous. As soon as i got into the bathroom i started throwing up. After that i felt fine, brushed my teeth and went back to bed.

Heres the things thats odd, im 17+4 and havent been sick and nauseous since i found out i was pregnant (this is my first) until then. Is it normal to start getting sick during the second trimester or was it just something that finally didnt agree with me after i went to sleep?