Endometriosis?

I was talking to my mom about things that had been going on with me for at least two months now, and she mentioned that I may have endometriosis. I'm not sure if I'm making myself think that's what it is, or if it's something else. I fit into most of the symptoms that I've looked at, but SO just thinks it's me.. Ugh.

Anyways, if you have it, does this sound like what I'm going through right now?
If not, I know you aren't doctors, but what could this be?

For the past two months, I've had four periods, where as I usually only have two (one each month). The first one is always really heavy, hard core cramping, seven days long. The second one is a couple days after the first ends and is a darker red but not too heavy, lasting two to three days.
Cramping seems to be an every day thing for me though, whether I'm on my period or not. It's from my ovaries up to my belly button, just really sore. Sometimes it's in my back.
I feel extremely bloated. A lot of days I haven't even been able to use the bathroom, I just feel like I need to.
I hardly ever get to have sex with SO because I always feel like I have an infection or it just plainly hurts to even do anything. I'm always sore down there. I have painful urination most of the time, even during my periods.
It's just exhausting. No one believes me. SO doesn't really understand that it honestly does hurt.
I just don't know what to do. I had an appointment scheduled for a month, and the doctor canceled until next month, so I need to find another doctor.
I just need advice or help of any sort if you know anything about what this could be. Thank you for taking the time though to read all of this. I appreciate it.

Im sorry that you are having these pains. I have not been diagnosed with it but it seems to run in my family. And I have been having alot of the same pains as you. I have tried talking to my gyno and regula doc but they keep looking for cysts and kidneys stones. I hope you get an answer soon, you know your body and when something is up. So dont let anyone feel like it doesnt matter.