Another UTI

So I woke up this morning and I went to pee and it was really cloudy & smelled like bad eggs. Yesterday during pe I went to the bathroom and it smelled like bad eggs but I thought it wasn't me. I think I've got another uti. I had one in like February or January. My mom won't take me to the doctor because it's "something we can cure by "ourselves," last time I skipped school one day and drank a shit ton of water and took a ton of probiotics. My symptoms were also different last time. It was burning and kidney pain. Now it's cloudy pee, rotten egg smell and kidney pain. I don't know what to do bc I just want to go to the doctor but she won't take me and I can't bring a ton of water to school to drink during the day.