Someone Tell Me What's Wrong

So I usually shave very often but I ended up letting my pubic hair grow out for a while but when I found out my bf was coming in town because of emergency leave I shaved ...I used a razor from a pack I had bought from dollar tree and I used soap as the lube to shave the hair off...everything was fine when I first shaved.me and him had some good sex ..but I've noticed since my pubic hair started to grow back I had a pus bump on the outside of one of my vaginal lips so I popped it but I don't think I was suppose to because now its turn into a bump with blood in it and I also have dry bumps with dry white skin coming off of em all at the top part of my vag.. there's nothing going on with the inside of my vagina ..no itching or burning sensations its just the outside...could it have been because of the razors I used to shave or the soap??? this has happened before but it wasn't as bad as this time