Sounds like it is just your cold and anxiety. You know, colds can upset the intestines and cause nausea/gagging, but they won't cause v*. It's just the body's way of reacting, the mucus upsets the intestines and can cause more frequent/loose bm and the gagging comes from your respiratory system having trouble with breathing, so the body goes into alarm mode and "is there something stuck in my throat that makes it difficult to breathe" and that causes the gag reflex. Get yourself a nice cup of lemon and ginger tea with some honey, sip it slowly and try to relax. You will be just fine I know it's really worrisome and unpleasant to feel sick like this, but you will be just fine! Hopefully your cold goes away soon so you can start to feel better in general.