hi ladies, I need help. I'm 26 weeks & I have been having trouble breathing. I know it's normal but…

hi ladies, I need help. I'm 26 weeks & I have been having trouble breathing. I know it's normal but I need tips on how to make it better. I sit up drink water or put my feet up and relax but it feel like nothing is helping. I'm not getting sick just my throat feels really tight .. like I try gasping for air but I feel like when I do is suffocating me. and I can't keep bearly food done. I feel like I'm dying. seriously. I just hate how everything is normal never had this with my first born! :/