Nausea, period, and Covid

I have nausea like when I’m pregnant—aversion, craving salt and carbs but nothing settles my stomach. I also started my 2nd period since having twins Dec 2019. My first period Dec 2020 did not have this type of nausea.

But then I also had fever, cough, achy, headache, stomach issues then nausea starting last week.

I’m wondering if the big hormonal shift is causing the nausea? I’m still nursing twins.

Or can a virus cause nausea that’s like pregnancy (I think stomach bugs feel different than pregnancy nausea, right?)

Or is this THE virus? Does Covid cause nausea that causes food aversions? I mean my husband was cooking meat and it smelled soooo bad.

Anyone know what happens hormonally when u go back to having periods? This whole array of symptoms is bizarre