[carmen in nj]

Hello and welcome, well I can say that yes is a BiG possibility that she is pregnant, the "stuck" together is called a tie, and that is normal during breeding.the dog pregnancy test is very expensive, but you can google and learn as much as you can about whelping so you can help your baby.
I hope you can prepare yourself as much as you can. best of luck ..
hugs,
Carmen in nj