Is it normal. ..

Sedaya • My name is Sedaya and I'm 23. My husband and I have been together since 2009 and got married April 2015. We have a four year old daughter and had our second daughter 4-16-16 :)
Every other day I'm extremely nauseated. One day I can barely get out of bed and the next day I'm fine. It's been a pattern like this for 2 weeks. With my first pregnancy I wasn't sick at all so this is new to me. I'm wondering why it's this pattern. Very strange. Anyone else have a pattern of nausea?