Worrisome discharge with cramping at 33 weeks pregnant

****TMI WARNING: pregnancy discharge****

Guys, I know this is extremely disgusting. I usually never post pictures like this, but I have no one to ask since my obgyn's office is closed (the hospital I'm delivering at is almost 3 hours away) and I'm extremely worried.

I'm 33 weeks pregnant with my 4th child (probably unrelated, but I'm doing my 2nd vbac). Ever since yesterday afternoon, I've been having very bad constant menstrual type cramping in my lower back and stabbing pains in my lower abdominal region. No contractions, just these bad pains. Since this has been going on, I've also had this really gross light brown discharge literally pouring out of me. I can feel it pouring out like every 5 minutes, especially when I stand up. It's so bad that I'm wearing pads and having to change them every 1-2 hours. It doesn't have a smell at all. I'm not itching, burning, or anything like that. My baby is also moving like normal.

I've never had anything like this happen before. I don't have an std either (I've been married to the same man for years now). I'm so scared I have some kind of uterus infection or something.

Please help 😩

Also, please no rude comments. I understand it's very gross, which is why I put a tmi warning on the picture. If you have a weak stomach, just keep scrolling.