You're completely wiped

You drift back into a doze, barely aware of what's going on around you. You dimly hear the sounds of groaning and fucking, but don't bother opening your eyes to see what's going on. You feel like you're immersed in a tub of warm water, drifting happily into a dreamless and comforting darkness of complete exhaustion.

At some point you manage to get upstairs, either unaided or with someone's help. You regain semi-consciousness to find yourself on your bed, half-covered with a blanket, but can do no more than pull it higher on your aching body and fall back into a greedy sleep.