I Have Pain In My Upper Abdomen And It Hurts

I have pain in my upper abdomen and it hurts worse when I eat. I went to the dr. and he gave me generic Zantac/Rantinine, he said he will do an endoscopy in two weeks. I drank a lot of pepsi soda and I take Ibuprophen every night. my question is can I take anything to help me sleep at night? I also have migraine headaches. I am also an insomniac.