Issues with separate Prenatal vitamins and DHA pills?

Christa • Pregnant with baby #1 in November 2016! Yippee!
Ok, has anyone had issues when trying a new prenatal vitamin when the old bottle runs out? 
Also- anyone had issues with the separate DHA pill? 
I tossed my cookies almost immediately after taking them. 
Trying to avoid not being able to keep it down!