Concerned

I recently had a hip replacement under spinal anaesthetic, The anaesthetist had 4-5 goes before he was ‘successful’   I’ve had  previous spinal decompression and laminectomy. Of which he was aware and was advised to go above the scar tissue .. did he NO ! 

 I’m not sure if the change in bowel movements and back pain are a result of having the spinal, the iron supplements for low Hb, medication cocodamol or something else to be concerned about  

I have constant back pain, feel constantly incredibly tired, and feel like I need to poo all the time, really difficult to do. Am I being neurotic?