18 and possibly pregnant

I recently turned 18 on November 4th of 2017 and am currently in the tww of waiting to see if I'm pregnant. I have a lot of symptoms but that is beside the point. Me and my boyfriend talked about it through and somewhat planned it and he knows and I know and now we are just waiting. I have hinted it around my family, or have thrown out the idea and they are all against it. Telling me to think of other options if that is the case and it hurts. I'm scared if I am pregnant I won't have any of my families support and they will all disown me. I wish they could just talk me through it instead of saying automatically I need to think of other options.