Hi there..
Pic is not clear so cannot say it is not a melanoma but judging by the regular shape, it does not appear to be.
For best outcomes please 📥 clear digital pics and perhaps a simple Dermoscopy test may be in order & then decide if a biopsy is required.
For more discussion and clarity and further intervention please consider using this App's INSTANT ONLINE Consultation to connect and clear this doubt🙏
Health Tips
Avoid OTC products, home remedies, self medications and Dr Google's suggestions 🙏