Round ligament pain?

Cheyenne
Has the Round Ligament Pain that you've experienced been continual? Everything that I read says that it should be a pain that lasts for a few moments but then subsides. I have had a constant sharp pain in my lower right side going on 2 and a half days now and I am miserable. I have been to the ER and they told me I am just having normal pregnancy cramps. Which was relieving to hear but hard to believe because the pain does not subside. I've been in tears, and I have a pretty good pain tolerance. I'm just wondering if any of you ladies experience prolonged round ligament pain in one specific spot that does not subside? Please give replies, I'm worried. (22 weeks pregnant)