Hi...it's good you had the extra blood tests. Was it through a rheumatologist? I saw one to see if there was a connection to another issue...no, not related to UC, separate. sigh..lol.
I do use Robaxacet (but the Costco version of back relief)...it helps when I take it in the morning. Taking the edge off is helpful.
It seems it's your lower back consider the throbbing sensation...have you seen a chiropractor?
You might be able to help your pain somewhat by sleeping with a pillow between your legs as well as hugging a pillow when on your side.
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