Itching and burning...

So for the past couple days I’ve had a light burning feeling when I pee.. no other time. I thought it was just from being dehydrated because I’ve also had cloudy pee and it’s had an “old” type of smell to it. Well yesterday I started getting an itch inside my vagina. It’s not itchy anywhere else outside. I have no idea if the two have any  correlation so I came here to ask if anyone has any ideas.

I do have a newer sexual partner, but I’ve been intimate with him for over a month and these problems just started occurring the day after the last time we had sex. I’m thinking the itch could just be an abrasion maybe??? His last sexual partner was months before me and he hasn’t talked about any type of issues that would suggest him having an std. I know and trust this man very much, so I trust him in the thought that he would tell me if he thought there was anything wrong.