Get a dull ache around lower left rib cage a day after drinking and calf pain accompanied by sweats and tightness around my head. what could it be?

Hang over: Hour symptoms are similar to hangover (alcohol withdrawal) symptoms after moderate to heavy drinking. In most isolated cases the symptoms should resolve in a couple of days without intervention and a regular intake if non-dehydrating fluids and nutrition. Check with physician if such episodes become frequent with dependency when social life start getting affected. Be careful out there:)