S.T.D ?

Okay so I've started to notice that I feel the urge to pee a lot ! But when I go to the bathroom not much comes out and it's really painful, there is also a little blood in my pee. These are all signs of a uriney track  infection I know, but I had sex for the first time last Saturday and my s/o has not gotten tested for stds, I looked up the symptoms and they coincide with some stds , we used a condom but I'm not fully convinced, do I more then likely have an std or is it all just coincidence??