That's really hard to say not knowing your situation.
I can relate, I just try not to worry about it, there's nothing I can do about it so I just go on enjoying my family and pregnancy and the ones that are interested/excited. I know it hurts though but try not to let it get you down or cause you stress. Hopefully they'll come around :)
I'm in the same boat my mom shows no interest. .. my aunt is more excited than my own mother I have learned to live with it
Both my parents kicked me out, (they don't even live with eachother) anyways once the baby came they changed... people usually do