@Vimto1991 yes the right side seems to be more prone to round ligament pain, not sure why! I’ve also been researching maternity belts but so far the only one I found that’s aimed at supporting during sports (which is my aim), is one from the US. I’ve emailed my physio to ask about belts so will post here when she gets back to me!
It’s a shame walking is setting yours off, but after a couple days of rest I hope the ligament relaxes. Taking a nice bath last night definitely helped me. I find sitting too long makes my belly feel a bit sore.