Talk to General Physician on Inside Stitches

Assalam o alaikum, any surgeon please guide. Mery husband ka 1 month pehly bike accident mai finger py cut lag gaya tha jo gehra tha kafi, dr ny stitches laga diyay thy, 2 weeks baad stitches kholy jo dr k assistant ny kholy. Finger heal bhi hogae ab kl finger mai ye dhagy sy nazar arahy thy wapis dr k pass gy to wo available nahi thy asistant ny bahar wala dhaga kat dia bs aur kaha k koe masla nahi ye under hi rahyga. 2 jaga sy chota sa dhaga abhi bhi nazar a raha hai under. Please batayn k isko remove karwana chahiyay? Infection to nahi hoga agr aisy hi rahy to? Please guide jazakAllah