If your mom was taking care of the baby while you slept at his house I full understand whys she ticked off.....You had the child its your resposibility, if not then there is something else going on. I used to argue with my mom all the time about who I was dating, the only one I didnt have trouble with was hubby and some other guy.
We used to have a rule at my dads even if we were 18 and we lived under his roof we had to follow the rules or we could leave because it is their household and they didnt have to help me at 18 as im considered an adult in quebec.
Respect your mom but if she gets out of hand seek help and shelter
me and my mom are on a really good terms but thats is because I dont f up all the time anymore there is still some issues but they get worked out