Replies to 'I'm Pregnant!'

Is there anyone out there who can help me with my dilemma?  I am 26 weeks pregnant with my third child, suffering terribly with morning sickness and heartburn AT THE SAME TIME!  It is driving me crazy.  I used to be able to have ginger, but at 17 weeks junior decided he/she didn't like it anymore.  What a pity, as I actually like ginger.  So next I tried orange juice.  That was okay for while until again it had a bad effect on my insides.  Then there was dairy products.  Well that lasted about a week.  A friend suggested Coca-Cola and that seems to work, but I really don't like having too much caffeine while I'm pregnant.  Has anyone found something that works for them?  

 I don't drink alcohol or smoke cigarettes of any kind.