Question after having a baby?

so i had a baby 3 months ago as of November 28th. before i had my son, my husband and i would always go up to our new friends house (we met them back in july and we had been inseparable ever since). they were our first couple that we could actually go out to dinner with and things like that. they were very involved with me being pregnant, meaning they were there if i needed to go to the hospital or anything and going to the hospital after i had my emergency c-section. it seems now that i have had the baby that they almost ignore me. when i first went back to work 6 weeks after our son was born, the girl was picking him up from daycare and watching him till i got home (it was only about 30-45 min) now she wont even go near him. we always use to go up there and it didnt use to be a problem but it is now extremly cold outside and i dont want to take my son outside in that kind of weather and plus they dont understand that i have to keep my son on a schedule and if the doesnt stay on his schedule it messes with him all throughout the day. they just came downstairs with 2 of my husbands best friends (mind this these 2 guys have been my husbands best friends for a good 10 years or more) and no one even said hi to me. i dont know if i did something wrong or what...but its frustrating because this is a new state and i dont have many friends here and well it looks like i just lost another friend...any advice on what i can do to be more social or to maybe get my friend back :( (im sorry if this sounds immature its just really frustrating, and no i am not a young person i just think its wrong the way i am being treated)