Cold sweats???

So I took a nap and while I was sleeping I realized I was drenched in sweat. However i was so tired I just ignored it and fell back asleep. When I woke up though I felt HORRIBLE. Idk how to explain it but i feel so gross. I feel like something is in my throat, I’m really cold too (it’s like 50 degrees outside and to Californians that’s cold okay LOL). Does anyone know maybe why i had a cold sweat? I’ve been struggling with digestion issues so maybe it’s heartburn???? Idk help me out hehe