Hi, I am 35 weeks pregnant. The past week I have been vomiting, but it s always really mucus like, thick, clear, except if I have eaten. I feel like I need to clear my throat and once I do, I start a coughing fit and start vommiting. What is the cause? I have tried less liquids, more liquids, small meals, warm lemon tea, peppermint tea, nothing is helping.