RBC, MCH, monocytes count mentioned is within normal limits for your age and gender. Recurrent aphthous ulcers are multifactorial.
Next Steps
In specific to rule out macrocyclic anemia the following tests would be beneficial:
Peripheral smear
B12 and folate levels.
Health Tips
A brief medical history if any and your habituation with alcohol will help a clinician to rule out any specific concerns.