In the Name of God, the Compassionate, the Merciful.
Hi!
Conversation
.
.
A: Would you like anything for your stomach?
B: I took something earlier.
A: Get better.
B: Thanks a lot.
1- Is “Get better” short for “I hope you get better”?
2- Is “stomach” short for “stomach ache” here?
Thank you
Yes, or no, or maybe.
Strictly speaking it’s a command, as if “A” would make a decision as to whether or not they should get better. I think it actually carries along the ideas of “take care of yourself” and “I hope you get better”.
I do think this line needs some transition or acknowledgment of the line before. It seems like an abrupt change. Something simple like this:
B: I took something earlier.
A: Well, Get better.
2- Is “stomach ” short for “stomach ache ” here?
It’s referring to some sort of stomach problem. Maybe an ache or queasiness or something.
Thank you so much, Arinker 
Very nice.