Really annoying back pain

For the past week, my back has been hurting constantly, even if I take medicine. On the second day, I called my mom because she's an orthopedic doctor and she told me to rest my thighs at 90 or so degrees from my spine whenever I was laying down.

That worked until last night when I was resting. My back started hurting again so I took the pillow from under my head so my spine would be straight. But then my head started hurting and my back wasn't getting better. I tried different positions and each one made my back stop hurting for about thirty seconds and then it would start again. I couldn't fall asleep until 3 in the morning.

I'm not 70 years old, my word!

I still have two weeks until my period.

I've taken acetaminophen and it does nothing except make me feel tired.