Estrogen deficiency?

Hello,

I'm 17 years old and I stopped taking the pill about two weeks ago, I think, because my pill was no longer available, for whatever reason. Since I stopped taking it, I've had a constant burning sensation in my vagina and also as if my bladder were burning. I constantly have period cramps, like severe stomach pain. I have to pee frequently and can barely hold it in because the burning gets more intense, I feel like. My skin has also become drier in general.

Can anyone help me or tell me what this could be and what I can do to make the burning go away quickly?