Mole on vulva. Cancerous? Should I have it checked? (Photo)

Should have an overall skin check with a dermatologist and examine the lesion under dermatoloscope, a specialised light that allows closer examination of the lesion. If in doubt, excisions biopsy to determine the pathology and proceed with appropriate treatment thereafter.
Wish you the best in your journey,
Dr Leo Kim, Specialist Plastic Surgeon in Sydney

I would suggest visiting a doctor to have it assessed. They will do a biopsy if they are concerned about cancer.