I would advise you to call an adult relative or your mom's friend whom you trust and have them take care of this as soon as possible. Otherwise she may end up hurting herself or even you. Please take care.
I don't think anyone could tell you what specific drugs or alcohol your mom is on from that description. But it definitely sounds like she is intoxicated. You need to tell an adult that you trust. Your mom could be using drugs, or have a mental illness that is starting to show symptom, or maybe she was in an accident and got a head injury. Whatever it is, she needs medical help. Don't worry about your mom getting mad at you, you need to tell someone. When she gets better, she'll thank you for it.