Depressed sahm.. people dont like me?

i have only 1 friend now and she lives across the country... my other friends dropped me once i had my 1st child.... i have web pages that i manage for my photography hobbies and i have alot of family and childhood friends, but none of them actually talk to me.. im so frustrated and lonely.. I even tried to start up my own moms group so I can get out with other moms I know but they all ignored my invites and wont even reply. I feel like no one likes me and im a very likeable person.. I am friendly. and I get along very well with people. I'm a great mom i know moms who just had babies and are new moms.. but not one of them will so much as talk to me.... the only reason I know would be because I am a single mom. divorced. my ex left me after our son was born and i was young... now I am with someone new and we have been together for 3 years with a daughter... so the people i know think I am not good enough for them... mainly because they have their spouse..are very religious.and my kids are * a mistake*..as what ive been told... I have tried making new friends everywhere I go. but its sad.. it doesnt happen.... I dont know what to do.