No Baldness at all in family line

[jacarroll4]

I am 55 years old. I noticed my hair thinning back in 1999. Before this I used to blow dry my hair every day for 10 years, sometimes getting my scalp very hot. In 2000, I went to a regular beauty shop and had them straighten my hair with chemical straightener,( I geuss thats what it was). He applied it then left. It started to burn instantly and after 5 minutes I was screaming to get this stuff off me. Needless to say I suffered second degree burns on scalp and face. would any of this attribute to my hair loss which has been Very very slow? I have been on propecia for three years and it has slowed way down but does continue a little. I am going to have a transplant but am just curious why am I losing hair and no one else in entire family going back 200 years. Thanks for reply