Frequent urination, and fishy smell?

In the past few days I have noticed that I have to frequently urinate and even after I urinate I still feel the urge to as if I didn't get it all out and will shortly after have to go again and will experience the same urge right after emptying my bladder. Along with that I've noticed that I have a fishy discharge smell it isn't strong. Other than that I have noticed no other symptoms no burning when I pee or anything like that. I bought some urinary tract infection pills to see if that relieves any of the symptoms and I took a urinary tract infection test and it came back negative. It has been over a year since I had unprotected sex, could it possibly be an STD? (from what I've read I haven't noticed that my symptoms really match up too closely to STD symptoms as I'm sure you can see.) Or is it more likely an infection? I read something about Bacterial Vaginious which apparently causes a fishy smell but it didn't seem like any of the symptoms of that were frequent urination? Does anyone know what this could be? I can't visit my doctor until next week as I am out of town, but I have myself so stressed I can't even enjoy my trip at this point.. I'm such a worrier so this is just traumatic for me, someone please give me advice, tips, remedies, or ideas of what this could be! You won't believe how appreciative I'll be of any responses!