So, i have been having this problem for quite a while, and i was wondering if anyone knows what's wrong?

sometimes my vagina gets like this aching sensation and not a satisfying one at all and it feels like i have to pee all the time but when i do go it'll only come out as a tiny droplet or nothing at all. It goes away after a few days but it would randomly come back. oh and sometimes after I've gone a while without having sex and then when I have sex the same problem. does anyone know what this might be?? I wanna get a checkup but not until i have an idea of what it is, and i have NO IDEA what it is :( i need some help. and advice.