I find that a warm/hot water bath soothes almost all kinds of pain. If your doctor is already giving medicines you may consider that. There's also the hot water bag/ thermal bag. That helps too.
I am going through the exact same same situation as you, except its lower back pain, and feel like a extreme period with brown period spotting. Have you had any brown blood? Have you been to the doctos yet? :)I hope you get answers soon!
Might want to consider checking into kidney stones...Topamax is known to cause a person to form them. I take Topamax for seizures and monitor possible side effects. Hope you get relief and find out soon. Please let us know what you are diagnosed.