Metallic taste?

So since Saturday morning I’ve had a metallic taste I hardly eat Bc I would gag and forced myself to swallow. Sunday I was extremely tired although I slept a good 7 hrs I took at two hr nap woke up but felt dizzy it took me about 20 mins to stand up was nauseous the whole day after. I couldn’t eat or cook Bc the smell of food or looking at food made me nauseous, although I did eat two slices of pizza the whole day. the metallic taste is driving me crazy it makes me dizzy and lightheaded. Not to mention I also have a bit of a headache. Not constant but occasional. Anybody know what in the 🌎 is going on or why I have that taste? It’s not constant but does come in spurts randomly.