Back pain 😭

I’m 28 weeks and I’ve been having back pain on and off for the past few weeks.. pain coming from my side where my kidney is but yesterday it started up again and hasn’t gone away my doctor told me to take Tylenol extra strength and it has not helped at all.. anyone have any tips on what I can do to alleviate this pain I was so miserable last night and in tears tossing and turning not being able to sleep because of the pain.. FYI.. I do not have a UTI I got tested yesterday at my doctors appointment..