'I was shaving my pubic area and my skin was kinda dry not really wet and I didn't use any shaving cream just a little bit of soap anyways after I was dont shaving I realized the razor was a little rusty. yesterday and water blister appeared on the upper outter lips of my vagina and now it seems like its trying to heal. it doesn't itch or burn only hurts when touched or rubbed against clothes. there's no discharge or anything. is this a reaction from my razor?'
You more than likely gave yourself a little razor burn with a dull, unlubed razor, you may be forming an ingrown hair. You can put a bandage bandaid over it to help with the rubbing. If it gets a puss looking bubble on it, take a small mirror an some tweezers and see if you can pull the hair. After you pull it be sure to wipe the area with an alcohol swab.