Why im i havin shooting pains in my ? does it mean pregnancy ?

ok so heres the thing i have not had for about 3 months now and i hav had 2 "normal" periods and a unusually light and short period this month now i am having sharp pains in my iv had it for a few days now and it is quite painfull also i have had some smelly discharge what could be wrong with me all i do these days is sleep im always tired i also hav a pain in the bottom of my back that comes and goes and it also painfull could i be pregnant or is there something else wrong ?? please help as much as you can thanks x