Hello from JustAnswer. This is Dr. Love and I will be glad to assist you today.
These levels of lab tests would usually not be a reason to cancel or delay plastic surgery.
The issue that would be most of concern for surgery would be whether this is a spurious elevation of the RBC count because of dehydration. When there is less fluid in the system, then the count of red blood cells in the volume of blood tested will be falsely elevated. So it would be prudent to be drinking plenty of fluids on the days leading up to the day of surgery. On the day of surgery, you should follow the instructions regarding diet and restriction of oral intake, but if you are well hydrated when oral intake is restricted, then you will be in better position for surgery.
Although thee are not at a level to interfere with surgery, it is appropriate to consider the reason for these lab results. Since you are likely still menstruating, there are certain conditions that can cause an elevation in red blood cells that may not be manifested in women while they are losing blood on a monthly basis. For example, there is a condition that is a benign overgrowth of red blood cells, called polycythemia vera. This level of RBC is not at a level that would make the diagnosis, but the monthly menstruation may keep the blood from accumulating excessively.
A low MCV is suggestive of a low amount of iron, which is also common in women that are menstruating, but you are obviously not anemic from the low iron.
It would be appropriate to discuss these labs with your primary care doctor. Your doctor may choose to first repeat the labs after a period of good fluid intake. But further evaluation may include an iron profile or a test for a common mutation that is the usual cause of polycythemia vera.
If I can provide any additional information, please let me know.