HELP!!! Birth control ??

I want to get on birth control because, lube gives me a UTI every time I use a condom but if I have sex without a condom I don’t get one. I have no idea how to tell my mom I want to... I’m 18 and in a relationship, I also think I want to get the shot one so I don’t forget to take it or anything and mess my cycle up more than it already does. so PLEASE HELP on what’s a good birth control and how to tell my mom.