Your mom is definitely a control freak. Don't even TELL her a THING about anything personal from now on! She is overly dependent on you it seems like! She wants you all to herself as it sounds like she can't be alone.

Try to get back in touch with that woman before to much time has passed and apologize for what happened. It's not completely your fault, but you did let your mom control you and push you around. Tell her to but out. Stand up for yourself. She is not entitled to know everything about your life. Get a lock on your room asap. Don't leave out personal stuff like your phone or laptop.

BTW, no one really likes a momma's boy. Sorry, but you do come across as being one.