I hope someone can answer me ...

I'm 37-38 weeks baby is measuring in the middle and dr said I can have him at any time....anyways, I have been having bad diarrhea for a week now, sick to my stomach, puking(acid burning feeling) in my throat and mouth, hard time breathing when laying down at all, and now sick symptoms like stuffy nose, feet get cold easily, feel like I'm getting ear infection and more. what can this be caused by!?