Suggest Remedy For Itchy & Dry Vagina With Pimples

Im 32 years old, female, i dont know how to ask this but after i gave birth things changed so bad... im not comportable having sex with my husband it hurts feels like i have wounded. And now i try to looked at my vagina in the mirror there is something in the entrance of my vagina looked like a little bubbles bigger than a pimple and my vagina is dry, and itchy. Im so scared. I dont know whats happening to me. Hope u can help me Thank you very much.