Crackers and Sprite does not a diet make

Christen
Ugh! 2nd pregnancy @ 7 weeks and I am in morning sickness hell with a whopper of a headache to boot for the last 48 hours. I had zero pregnancy symptoms with my 1st pregnancy; I felt like a million bucks for almost 10 months! So this is all new. I have no appetite and sipping water and Sprite and occasionally snacking on a saltine or ritz has been the extent of my diet for 2 days. Swallowing a pill is out of the question. 
So, my question to those unlucky mamas that are feeling me. What do you eat? Have you found anything that helps? Any advice is much appreciated.