Ligament pain?

[Samkate]

I'm currently 23 weeks pregnant.

Between weeks 15-21 (ish) I was getting pain when I stood up on the left side of my abdomen. Like a quick catching/painful feeling. After a few seconds of walking it off it disappeared and all was well.
From what I read this was classic round ligament pain and my midwife confirmed my suspicions.

However the last couple of weeks this has stopped and I'm now getting pain on the right side of my bump. If i walk for more than a couple of minutes I suddenly feel like I've been stabbed. The pain stays unless I rest for 10 minutes or more. Having a quick rest then carrying on doesn't help.
So if I've got somewhere I've got to be I've got grin and bear it and just walk through the excruciating pain.

Unfortunately I have a job where I'm on my feet almost constantly walking and rushing around for the best part of 12 hours. I've been reduced to tears a couple of times when it's at its worst.

Is this just another type of round ligament pain or should I be concerned and seeking medical advice?

I've had my anomaly scan and all is well. Baby is very active and I have no concerns about him, I know this is something to do with my anatomy.

I didn't have any pain with my first pregnancy and just didn't know what I should do.