Fruits taken at night can cause gas and bloating. Avoid that. Better have cold milk as suggested by many... And water is the best therapy...

Start lil bit of walk after every meal, drink plenty of water and if not cured ask dr. For medication.

If that is happening too much u should consult with ur doc

<a href="http://app.babychakra.com/collection/165">Pregnancy Foods</a> 
You will even get some vegan food options under this article. Or better search food in the search option on app.
Heartburn is common. Have cold milk at night. Avoid apple before sleep. Walk walk and walk.; Stay hydrated. 
Have ajwain boiled water if it gets too much.(have thoda sa, not much)

Go for a walk an hr after dinner and burp while walking as much as you get. Dont shy away. Drink lots of water. Avoid hot milk before bed, cold milk is ok. If it comes even then, sleep in sitting posture with a wet towel on your tummy. These are a few you couldvdo.

I am 29 weeks pregnant and get heartburns in the night. I don’t eat post 7pm and if i am hungry I eat Apple or drink glass of milk. still when i do to bed I get those heartburns. Can anyone please suggest how to get over it?
Please even suggest vegetarian sources of Iron, Calcium and Protein..