Should I feel this way??

My little man is 3 weeks old. Born July 18th. During my pregnancy I had two friends that were pregnant as well. (One is still pregnant at the moment but is due in like 3 days) one of my friends was due 9 days before me. Both my friends are now sister in laws but we were all close friends. Now this is my second baby and their first so I get its a big deal. (Side note: my first pregnancy I didn't get to enjoy due to a bad relationship with the father) second baby different father. So I was happy over the moon about this pregnancy but every time I was around my friends and thier mother in law they never would acknowledge the fact I was pregnant still today I never got a congratulation from them.. when I'm around them they make me feel invisible. And then I get sad about being pregnant. I got so upset that I stopped hanging out with them and eventually stopped talking to them. What hurts more is that one my friends had her son and I even congratulated her the day he was born and then even after I had my son up I made sure that her son and her were doing great because he was born underweight. And I still got nothing from her the day my son was born.. is it bad that I'm hurt by this??? Am I allowed to feel this way?