Sorry you aren't feeling well! You are out of the zone in which most women have miscarriages. So, try not to worry. But you sound like you are really having a hard time. Do you think you have a stomach virus? that's what it sounds like. You need to see your doctor in my opinion or at least call them now. baby is insulated and our being sick often does not concern them . . . or affect them. But get checked out. Especially so you don't get hydrated. When we throw up, have diarrhea and a fever, we can dehydrate. You may need fluids. So, tell your doctor about this asap. good luck and let us know how you are doing hon!
It sounds like common pregnancy symptoms, I know it's miserable. I would say under normal circumstances they don't cause miscarriage. I'm sorry your feeling awful. For nausea I would try lemon water or maybe some ginger tea.