Support band = cramping or ligament pain?

Hi all, I am 34 weeks and started wearing a maternity support band at suggestion of my dr. I wore it first time full day yesterday and it felt pretty good but when I went to bed I had a couple hours worth of pretty intense on and off cramps up high on my bump... maybe round ligament pain? Felt fine rest of the night and early morning. Put on band again this morning and on my 1 mi walk to work I started having the cramping feeling again. Coincidence or could it be related to the band?