Please comment !! I am 29 Weeks pregnant with my daughter and this is my first pregnancy

Last week I had a kidney stent placed due to a kidney stone that they weren’t able to exactly size or find and problems with obstruction in my urethra of sediment and debri and a problem of not being able to empty my bladder fully, I’ve been cathed several times and those have been ineffective due to the urine back lashing up into my left kidney leaving my kidney always full

The urologist is wanting to put my under to remove any blockages, stones and the stent. Last week I chose to have a spinal tap done instead of being put out in fear that my baby would be harmed by it but now I don’t have a choice of that.

Just want people’s opinions and to know others experiences