Nausea back or am I getting sick??

Lori
I had horrible nausea and vomiting from 8-20 weeks.. Then it finally went away. Today starts my 29th week and woke up nauseous and ran to the bathroom to get sick. 
Feeling dizzy and nauseous.. I feel much better if I lay down.. But can't for long as I have a busy 3yr old boy. 
So, is this normal pregnancy nausea coming back or am I getting sick??? 
Thank you!!