After bariatric surgery you will need to keep a close eye on what you consume. It is important not to eat foods that you know make you feel sick. I know this is stating the obvious, but plenty of people eat foods such as curries or other foods that just dont agree with them. Also, dont waste you food intake on unhealthy foods. There is more good information on gastric bypass surgery before and after can be found here.
 
Avoid drinking liquids immediately before, during, or after meals. Filling your stomach with liquids instead of foods will deprive you of your much-needed nutrients for healing and convalescence. Be sure to drink fluids at least 30 minutes before and after your meals. And of course, avoid drinking fluids while eating meals.
Refrain from drinking alcoholand caffeinated drinks. Alcohol does more harm than good for people who have gone through weight loss surgery. Devoid of calories, alcohol can cause stomach ulcers.Caffeine have the same effect, aside from working against hydration in the body.

Contact your surgeon if problems arise. If you experience one or more of the following problems, call your surgeon immediately: extreme pain in the legs, shortness or difficulty of breathing, fever, bleeding of the incisions, and dark stools.
Keep your follow up appointments, dont get lazy. This will make it easier for you and your surgeon to monitor and assess your progress. Also, this will result in early detection of problems such as surgical complications and nutritional deficiencies.

Keep yourself from getting pregnant for two years following surgery. Because your body is undergoing weight modifications for months after the surgery, it may not be able to support a newborn. This will be unhealthy for both of you and the fetus. Ask your surgeon for advice in case you plan on getting pregnant.

One of the best things oyou can do is join a support group. Coping with the aftermath of the surgery may be much easier if you do it with the help of other people. There are many support groups formed to provide emotional support and advice for people who have undergone weight loss surgery. Search for these groups on the Internet; for sure, you can find one within or near your locality.
Find ways to cope with stress. Stress usually leads to comfort eating, which is not good for people who have had weight loss surgery. Listen to your favorite music, read books, meet up with friends, and do whatever you can to in effect deal with stress. There are many ways that you can recover and restore yourself after gastric bypass surgery. Understanding how Gastric Bypass works is one of the first steps.