? jealous friend

My friend suspects I'm pregnant but I have not said I am yet asi have not told both my parents. She's told my other friend she thinks i am and why won't I tell her. She's neve said anything positive and been a bit off with me really! This is making me not want to actually tell her! 
What would you do?? 
By the end of today our parents will both know the news, I'm 8 weeks now!