I told my mom when I found out but I called her right before I went to class so I couldn't talk. It gave her a few hours to cool down and figure out what she wanted to say and it was an excuse for me to go that she couldn't argue with or be upset about.
I actualy told my sister the day I found out and got her to tell my dad the day afterr as I was to scared to tell him myself, it was then my dad that told my mum. They were dissapointed but I was glad to get that part over with
With DS *I was 18* I told my mom the day I went to the dr's and got a positive. With my dad I waited a few days and told him, he didn't talk to me again untill the day my son was born . With this one I told my family at about 7 weeks, my dad had a much better reaction this time lol