My husband doesn't have a fever feels cold even but is sweating profusely and has neck pain and a headache. we can't figure out why? he's 35.

Prodrome: Prodrome - the early symptoms of the start of an infection - the organism is spreading and the body is starting to fight back. You don't list medical history/meds so watch closely. If he rapidly worsens or has a medical condition that might flare up seek emergent care. Have him sip on some fluids and consider taking ibuprofen for the aches. Don't be surprised if a fever spikes later tonight.