Also I would show them pics of the ultrasound when you go to the doctor for the heartbeat, it might help calm things down a little. Hope that helps and good luck!!
My family hinted to me to not keep mine cause they think im not mentally ready yet and im 25. If eveybody went by the stupid crap like that that people say nobody would have kids in this world. I think parents also say stuff like that cause their scared. I would be prepared though. Just know im with you on keeping it, it is your decision!!