21 weeks and 4 days.... Pain in lower tummy

I'm experiencing pretty bad pains in my lower belly anytime I move my right leg higher than a sitting position. I live with chronic pain, and this is pretty bad. I figure it's round ligament pain, almost feels like a pulled muscle. Climbing steps, putting pants on, climbing in the car or bed etc is very hard to do. It is NOT cramps and I don't feel like the baby is in any danger..

Anyone else experiencing this? Anything that makes it better or at least manageable?