I'm 13 weeks pregnant and have the symptoms of a stomach bug including nausea and diarrhea. I have not had any morning sickness with this pregnancy and the prenatal vitamins did constipate me for the first week until my body got adapted. I'm not feeling all that hungry but i'm still taking the prenatal in the morning. When i do eat, I'm running to the bathroom. Has anyone else had this issue? What are some suggestions to help feel better? And should I be concerned about the baby not getting the nutrients it needs?