16 year old girl growing a beard!!!!

Hello I am a 16 years old and I have noticed that I’m growing facial hair.

I am growing a sort of beard it seems that each day I notice more pieces of hair. From far away you cannot tell but when I go up to the mirror I see hair growing on my chin and jaw line. I also have very irregular periods. Sometimes I don’t get my period until 3 months.

I was very concerned, so I told my mother and she took me to my doctor. My doctor ordered me to take some blood tests. The doctor said that everything was fine. If everything is fine why am I still growing facial hair and having irregular periods?

Should I be worried? Btw having facial hair doesn’t bother me I’ll be confident with or without it, I just want to be healthy.