I recently took an OD and my family reacted in a similar manner. I think it's just that they got a hell of a fright and are scared and worried about you. Suicide and suicide attempts are very difficult to deal with as the family and friends are never quite sure as to why. They may feel inadequate thinking that they weren't enough to make you feel like you want or wanted to live.
I hope I have helped shed some light on this for you. I'm here if you want to talk x