@annie1994 sounds like PGP. I didn't have it at all with my first but it was bad with my second, I feel like I'm getting away with it this time but maybe it's just still too early at 23 weeks! I can't remember at what stage I had it last time. I do remember it actually easing off maybe 28/29 weeks because the baby gets bigger and lifts out of your pelvis a bit. I've been training a lot this time both before and during this pregnancy so I wondered if having a stronger core than previously has helped support .
Things that really helped me were a support belt that I wore not all day but before any periods I knew I would be walking or standing (e.g. cooking dinner). Trying to limit walking and definitely limit walking pushing a buggy/carrying a toddler/walking the dog.
and LOADS of yoga. I tried to do 10 mins min a day using down dog prenatal app which has a pelvic pain focus, and it made a huge difference. stretching out every morning really helped, and I think over time it helped strengthen the muscles around the pelvis and lower back to support everything better too. Try to keep your legs together as much as poss (lol) e.g. don't sit cross legged. Roll onto your side before sitting up and getting out of bed. but I can't emphasise enough just how much the daily yoga helped even just a few minutes, I went from my husband having to lift me out of the bath of an evening to feeling pretty much normal as long as I was careful with my movements/lifting!