I clipped my ends about 3 weeks ago and my hair wasy fine. I've just been looking at my ends in the front of my hair and I have these little knots on some of them...What's up with that? Can I do anything to help prevent them??

Thanks in advance..
Mostly 4a..crazy hair

Currently using: 100% Aloe Vera Gel , VO5 Conditioners for Co-Washes, Jojoba and Africa's Best Oils, GV Biolage Conditioning Balm , Cream of Nature Detangling Shampoo, ACV rinses, Herbal Tea Rinses (rarely), Alba Botanica Leave-in

Goal: healthy hair and longer hair