possible yeast infection?

so my vagina has been itching horribly for about 12 hours now, I don't have money atm otherwise I would have bought something. The thing is it isn't inside the vagina it's the outside. I just had a pap last week and I know my pH levels are normal but haven't got other results back. I know it isn't an STD. I've had yeast infections before but I think that usually itched inside too and this is just outside. Anyone know if thats possible? Gonna ask hubby to get cream otw home from work...