Anybody? I have been having cramps and lower pressure on my pelvic bone. Also I've been getting…

Anybody?

I have been having cramps and lower pressure on my pelvic bone. Also I've been getting lower back aches that just come out of nowhere. It's not all the time but it's at least three times a day and lasts for a good while (an hour or more). Sometimes it feels like I have to use the bathroom #2 but nothing happens. I'm 28+3 weeks. Just curious if anyone else has this and if it's normal. I don't remember this with my first and if I had it, it wasn't anywhere near this bad.