Peeing...

I'm new to this app, & I know all of you guys are girls obviously lol, but I was Wondering if any of you gals have ever experienced this. 
I don't know if it's because I was about to start my period, but when I went to pee I would feel like this weird sensation, like I did pee but at the end I felt like I still wanted to pee but I couldn't, & it was very uncomfortable. & even now that I'm on my period I feel like this. Can any of you guys please advice me anything if this has ever happen to you at all?