As for what you can do now, make sure you're drinking lots of water, cut caffeine, stop any dangerous habits (alcohol, tobacco, drugs), eat sensible, healthy meals and get plenty of sleep. You can take Tylenol for the cramping pain if it's really bad (Midol, ibuprofen, etc. are NOT safe for pregnancy), or try a hot water bottle or heating pad instead. You may also want to start a prenatal vitamin, which you can get for about $10-15 your local pharmacy or grocery store.