Study as much as you can. Write out only the stuff you know you will probably forget in your notes. Basically study whatever you definitely are not most comfortably on then a week before the test study what you are comfortable on. Do it over and over again until you are right or believe that you know how to it.
A strategy that I have for studying is flashcards mostly. I also may just look over what will be asked on the test and make sure I understand it and do practice on what the test will be about.
Get on a healthier diet. If your doctor gave you pills or advice on what to do to stop your stomach from hurting I would suggest you follow his orders. Hope this helps!
