Upright regrowing hairs or miniaturization? (Photo)

I went through a telogen effluvium 18 months ago. Went to the doc and he said mpb as well. On 1 mg of propecia and hair began to shed heavily at the 3 month period for 4 months. Now been on propecia for 15 months, when combing my hair back i see little hairs sticking up with tapered ends. I feel likes it's regrowth but i cant tell if it's minaturized hair or regrowth. They look like many upright regrowing hairs but they seem to be thinner than the rest of my hair on my scalp which worries me.