Me and your boyfriend rent from my mom and dad we have been in this house for a while. We have had a daughter since. My mom feels she can stop over when she please this was never like this before until our daughter arrived. WE LIKE TO BE LEFT ALONE! Okay another example my parents left for a weeks vacation and my mom had her coworker check in on me, I am 23 years old I think I would be okay. If my mom doesn't hear from me by a certain time in the morning she will call and be like are you okay... heaven forbid I would have plans or an appointment. How do I let her know that I don't want to talk to her everyday or that I have a family of my own and would like to have some space to breath! Please help.

Asking her to call before she comes over is not an unreasonable request. I'd start with that. You could also let her know how her checking up on you all the time makes you feel.