If your eating habits leave something to be desired — and many people’s do — you’ll have to make some adjustments. Some solid advice: Cut out or only occasionally drinks alcohol. (For non-alcoholic alternatives, see our list of the best virgin drinks). Stop using recreational drugs and, if you smoke, quit. All of these substances and habits can harm a developing fetus. You may also want to cut back on caffeine. The research on whether caffeine can affect fertility is mixed. Experts generally agree that low to moderate caffeine consumption, less than 300 mg a day or about the equivalent of two 8 ounce cups of coffee, won’t affect your fertility, you’re your healthcare provider may recommend that you cut caffeine out entirely to play it safe. Learn more about caffeine and fertility. Although fish is generally very healthy, certain types are high in mercury, which can be dangerous to your unborn baby. Because mercury can accumulate in your body and linger there for more than a year, it’s best to avoid high-mercury fish such as shark, swordfish, king mackerel, and tilefish while you’re trying to conceive. Instead, eat lower-mercury fish such as salmon and canned light tuna (not albacore, which is higher in mercury) once or twice a week. Read more on eating fish while trying to conceive. Processed meats should be consumed in small amounts, and smoked or raw meats should be avoided entirely during pregnancy. Even hot dogs or deli meats should be heated until they are steaming before you eat them if you are pregnant. Take a vitamin-mineral supplement. Get lots of folic acid — at least 400 micrograms a day. Find your ideal body weight. Now a days different types of BMI calculators are available which can be brought into consideration to calculate the weight.