Vaginal soreness when pregnant?

Abbigail • Married and expecting a little boy on May 16th, 2016!! 💙😍 we love him so much already!
So I just found out I'm pregnant. (4 weeks and 2 days along) and for about 5 days, I've been so sore and dry down there that it almost hurts to have sex. I know it's not a yeast infection because I've had them before and this is not it. There is some itching but nothing like yeast infection itching. And not really any discharge. I was just wondering if this had happened to anyone else and what they did for it. I've read that this is actually common in the first trimester but I'm hoping it doesn't last long, I enjoy my sex life.