Absolutely go to the doctor. There are many vitamin deficiencies and other treatable conditions that have hair loss as a symptom. It's not a vanity thing to talk to a doctor about it, it's a major sign that you need to be fully checked over and have a blood panel. My pernicious anemia caused me to lose a lot before we caught it, but with treatment my hair is thicker than it ever was before.

3a brunette/grey but dyed curls
Pernicious Anemia has me at 20% grey now!
I don't do CG. I use whatever shampoo and conditioner I have which is almost always garnier
Cleanse: Garnier Triple Nutrition Shampoo
Condition:Garnier Triple Nutrition Conditioner
Stylers: Garnier scrunch gel, argan/coconut oil, Got2Be Kinky mousse. Varies.
Tshirt plopper and super scruncher