I’ve started to get heart palpitations and food makes me nauseous?

My entire life I’ve gone without health issues and then suddenly this year it’s been like I’ve become a completely different person.
It started about 10 months ago/at the start of the year.
Food makes me sick and nauseous. The smell of it, being near it and even when eating – I’d say 90% of the time.
That has been my biggest issue but in the past 2-4 months I’ve started to get heart palpitations that last up to 10 yours straight and just random heart flutter.
I get enough sleep but my undereye circles are insane. Sometimes I’m abnormally pale but then suddenly my face starts burning up and it feels like it has a fever. (Only my face, my body does not feel feverish.)
Generally I regularly feel nauseous and sick, even without food causing it. Just randomly.

Note that I am not pregnant or anything of the sorts.

Age: 20
Female
Medications: Nothing