I went 2 see my doctor about a large blood vessel in my vagina,he said theres nothing he can do about it, it has to be something he can give me right?

I agree, just watch: it is not uncommon to have a dilated blood vessels in many different places throughout the body. Generally we do nothing about those large blood vessels. If it were to cause a problem. Or if you have some type of bleeding in the area. That would suggest doing a further workup. And if you have recently delivered a child one would expect larger than normal blood vessels in this area.