LM1117-3,3 keeps using more and more current
Without a schematic it is hard to offer too much in the way of suggestions. That said I would recommend that you take a careful look at your 100uF output capacitor. Check to see if you have it oriented properly in the circuit because if it is a polarized unit that is in backwards it could be the source of the problem. 

Be careful too. Some types of reversed capacitors can be rather dangerous. Aluminum electrolytic types can explode out of their can if they get too hot. Tantalum types can burst into flame.