First post partum check-up

I was very surprised when the nurses asked me to leave a sample of urine in the bathroom. I thought I was done with this since I already delivered my baby so when I arrived and went to the bathroom I didn't leave a sample like I usually do during my prenatal check-up.. I tried after they told me that it was still needed but there is only a bit. My OBGYN just looked at the incision of my c-section delivery and told me I am healing fine. She told me to try to wash the glue off. (They used crazy glue on me instead of stitches during the operation). I don't use band-aid over the incision anymore but there were still glue around it. Frankly, because I am afraid to scrub my wash cloth vigorously on my incision, I usually just pat it with soap then pat it dry with a hot towel.