If you want some motherly advice Trixy, I'm a mother, and I would say tell your dad. He might be disappointed, as may your grandma and grandpa, but from what you've said, I imagine they all love you very much indeed, and they will come to terms with it - honestly they will. Every caring parent dreads situations like this, and often say things like your dad said, but that's only because they love their children and want the very best for them. However, it's happened, and your family have to know sometime - you can't hide it forever - so for your own benefit, and for your own health, don't delay - tell them now. From a personal point of view, if you were my daughter I would be devastated if you felt you could not come to me and tell me. Of course I'd be disappointed, but that wouldn't stop me loving you, and I would help you and support you in every way I could, and I would make things as easy for you as I could - and I'm sure your family will feel the same way. Trixy, you have a caring boyfriend, you have a caring family, so it's not the end of the world - really it isn't - and when the baby is born they will love it and all their disappointment will fly out of the window. Believe me. Tell them. Lots of love to you. x