Yellow urine (continued from old post)

I posted half info last time somehow. So my problem is i have yellowish urine since some weeks(or 1-2month), usually it used to be normal before.. so, i have also done lft twice, it was normal. Last mnth i had done usg abd, there was a tiny polyp of size < 3mm, which the doc said nthin to wrry. Also addition to this yellow urine, i have right lower back pain(morey like in muscle), it feels like as if air is stuck or pulled muscle. I am not sure if urine and this is related, i used to go to gym, idk if back issue is due to gym or kidney infection, m worried. I do have upset stomach generally, gnawing hunger pangs many times, worse when i wake up, yellowish stools. Probably ibs idk. Please help me to tackle this. Not on any meds. And i am worried if is it due to the polyp or any other infection? I have stopped gym though, and also i do stretches. Also, when i drink water urine comes out clear. Please help me. 2-3 weeks back i had felt pain(not burning) while peeing as well.