Can round ligament pain feel like trapped gas?

I'm 13 weeks, have had a persistent on-off dull pain in my lower abdomen for about 24 hours. Worse if I cough or turn over too quickly.
Kind of feels to me a bit like trapped gas, I feel like I need to do a huge long fart! Even my anal passage is a bit uncomfortable when I walk. But I do not feel it IS gas at all. I've been to the bathroom. (Sorry if tmi)
Can round ligament pain feel like that?
I have my 13 week scan tomorrow, so will get to check all is ok. But I just wondered.