red dotty rash, doesn’t itch

i looked up rashes and i don’t have any symptoms that seem life threatening. initially i felt panicky that i have a few red dots on my thighs and belly, and elbows, but i’m not itching or in pain or having trouble breathing or sick. i don’t have a fever. has anybody had rashes that occurred seemingly out of nowhere, ignored it and it went away? the fact that it’s on different parts of my body, i feel like it’s viral or something from inside my body rather than like skin irritation from allergies or clothing dye or soap, etc. it’s specifically on both my elbows, one of my shoulders, and a little bit on my thighs and belly. any idea, anyone? probably not worth going to the er for over the weekend. i’ll call my doctor on monday... *worried*