First time post, I am a 30 year old white male 5'9" 200 lbs. I work out on a regular basis and I also take supplements IE. Protein powder, zma, etc.

I am going to make this short because just being here typing this is making me anxious. I ended up in the hospital yesterday reason for going is that I have been sick all week with what I thought was some kind of a flu or stomach virus. Started to develop extreme pain in my lower back on both sides.

ER Doctor takes blood and hooks me up with some IV. Comes back about a hour later and says your kidneys are not functioning properly. I wait about 3 hours, they send me for a ultrasound. I wait another 4 hours for my doctor to get to the hospital (affiliation) and do his rounds, he comes to see me and tells me that the ultrasound showed no kind of infection or anything, but my Creatinine level is at a very high level 2.6 to be exact.
i do not have health insurance and he knows this, so he says he wants to take some extensive blood work that will take 2 days to get back and tells me to go home and drink plenty of fluids.

I'm scared and confused and need some advice.

Thank you.