Round ligament pain...again?

I experienced round ligament pain around 22 weeks. My doctor said it was likely due to baby growing & my body getting used to carrying the extra weight. It passed after a few weeks. I'm now 37 weeks & experiencing similar pain again. Getting up from a seated/laying position is very painful, as is moving my legs. The pain is mainly in my pelvic area & it's like my pelvic bone is popping. Is this round ligament pain again or something different? I feel like baby has dropped so I'm guessing that's what is causing it. Just wondering if I should be concerned.