I'm 24w and FTM. Yesterday at my prenatal appt. my OB briefly explained I have a small ovarian cyst during my 2nd ultrasound (20 weeks). She didn't seem concern. She explained it's common during pregnancy and it should go away after delivery. If not, then we will discuss more about it.
Labs: Lab results are meaningful only in the context of the person. High MCHC in a healthy person may simply be a problem with the calibration of the machine or reflect that reference ranges are set so that a few percent of healthies fall outside on either end. I'd ignore sed rate / ESR.
MCH and MCHC are called red blood cell indices. They measure the average amount of hemoglobin contained within your red blood cells. Don't worry about minor abnormalities in these indices. These tests really don't deserve all that much attention if your other CBC results are within normal limits.