It's weird that my husband doesnt see or talk to his parents?

Is it weird? He only sees or talks to them when theirs family events. It's really weird & odd. It bothers me alot, iv lost contact with my own family because he thought it was an issue that I talk to them too often or they passed by once a week. I had my LO 5 months ago & I feel like I'm going through some post partum. His family never came to see the baby, his mom never called or messaged me to ask how I was or the baby..she texted her son but not directly to me. She did the same when my second was born & only her husband & daughter came to visit us in the hospital. I feel like maybe she has something against me. I dont know.