How concerning is my high SED rate?

I am a 24 year old female with achy joints for several months. I went to the doctor about this and I just had some blood work done and my sed rate was a 73 (normal is <20). I actually felt pretty good at the time but within 12 hours of being tested I began to feel like crap. My monocytes were also a little high but only slightly over the upper limit. (Upper limit is 8 and mine was 8.3) Everything else came back normal. How concerning are these lab results.