Friend problem

Sa
So I have a friend who is also pregnant and a few months ahead of me. So when I told her I was pregnant she almost seemed mad... And now she will text me or call me when she is freaking out, I always do my best to help cheer her up and make her feel better. I even took her for a pedicure one day... But I feel like anytime I need a bit of encouragement I don't get it. I am just venting but it is so hard and exhausting being in a one sided friendship. Anyone have any experience or advise? My mom told me just to distance myself from her but I don't know how to without being like seriously you are sucking the life out of me, I need a break from you. Am I an awful person for feeling this way?