Cool sensation by pubic area

I might be paranoid but need some input if anyone can relate or help ease my mind. About a week ago i shaved my vagina with a dull razor, huge mistake. Within about 2 days the hair started to come back in. Recently i started having this really cold feeling down there and its making me panic!. Its only where the puvi. Hair grows, not inside the vagina at all. I have a cold, not sure if it is affecting my body in any way. I have a lot of razor bumps/ingrowns now. Havent had sex in a good 5 months but had oral almost a month ago.. but this only started after shaving with the dull razor.. any idess or anyone experience this? Im really paranoid