Sudden nauseous at 30weeks + 2 days (not been nauseous before)

LC • Sydney - mother of #1 23month old boy and expecting no2 3rd April. Happily married & loving life.

I’m 30 weeks plus 2 days and I’m extremely nauseous it came on a couple hours ago. Nothing seems to be helping! I’ve had a lot of lower back pain and ache for two days. Is this normal?