Stressed out pregnant

I just had to call ems for my mom and they had to get a temporary custody order for her. She’s 79 and basically an alcoholic. She had her two drinks tonight and at bed time fell on the floor and could not get up. I’m 37 weeks pregnant and couldn’t really help her even though she is 115lbs. She was belligerent and kept telling them how bad of a daughter I am and I’m a bitch. All I was trying to do was help her because I was also worried about a possible head injury. I’m wondering if I did the right thing…. But I couldn’t leave her head and if she fell again I wouldn’t be able to help her again. I’m so tired of all the mental abuse she puts me through and I don’t know if I can live here with her anymore. She’s so toxic and her drinking is just terrible.