Started Biotin A Month Ago. Been Shedding A Lot Lately, But Hair Feels Thicker?

[Rapido1234]

I added Biotin to the Propecia I take. Lately I've noticed a lot of shedding. Not only this, I am noticing a lot of thin and short hairs being shed also. Is this a good or a bad sign? My hair feels thicker and I can't really tell that I am shedding so much, but I don't want to be misled.