Loss of Appetite

i’m at 11 weeks now and just recovered from Covid-19 (finally negative on day 7). however the whole day i’ve been feeling very dizzy and lethargic. everything i eat, i vomit out. haven’t had a proper meal at all today because i don’t have appetite but when i do eat, i vomit it all out. not sure if it’s post-covid symptoms or just pregnancy symptoms. i’ve had nausea earlier on during my pregnancy but havn’t had morning sickness yet. any tips or advice on how to keep my food down? :( thanks in advance!