TTC question from a new Glow User!

I am new to Glow and would appreciate any advice I could receive on the following information. 
I was on the depo shot from January-April of 2015. I have been off of the depo since June 2015. 
Regular cycles started back in January of 2016. 
My period ended on Thursday. (5/5)     I had sex on 5/8. On 5/10 & 5/11 I have had the most insane nausea that I have ever experienced while driving/riding in a car. I chalked it up to being car sick on the first day...but two days in a row???
Any thoughts?