Feverish symptoms but no fever

Shannon • Mommy to Jude & TTC baby #2
I'm about 20 weeks and today I've been feeling exhausted with a headache, almost passed out this morning, and I fluctuate between chills and hot. My husband said my skin feels pretty warm so I took my temperature but it was normal. Anyone else have this issue? I figure I can just take it easy tonight and it'll be better tomorrow.