This may not be a typical question asked here but idk where else to ask. So every email that is sent to my email my mom can also see it and idk whether its connected to her computer or my account is just on her computer so how can i change this
Does she have your account password? If she does, change your password.
If she doesn't have your password, then it's most likely that she linked her account to yours. If you're using gmail, go to your inbox and click on the gear button. Click on Settings and then Accounts. See if there are any other accounts linked to yours.
Yes, 1. Change your password. 2. Go to her computer and go to your yahoo, msn, gmail, whatever and see if she is logged in as you, then log off.