Omg 15 and pregnant !!?

Omg, Im pregnant and I havnt told m parents, the only problem is my dad thinks that I am a really good girl who has never had a boyfriend because he wants me to be his little 'princess' forever and I am so scared and the person who I slept with is my boyfriends best mate and yes guys I no it sounds like I am a tart and I honestly do regret all of m actions so please help me and I am not getti ng an abortion !!