A warm welcome to our forum. I hope the operation went well and that you're on the mend and recovering. I think you are doing the right thing to see your doctor this Thursday as your GP will be in the best position to tell you what is causing these issues and what to do in order to feel better.
No one here will be able to tell you whether it is anything to worry about as this will need to be assessed by your doctor who knows your medical history well and has the details of how your recent kidney surgery removal went. If you wanted to talk to our nurses though about anything, feel free to contact them on this free number 0808 800 4040 - their line is open Monday to Friday from 9am to 5pm.
I hope that you will hear from the experiences of others on the forum who have had their kidney removed and that they will be along shortly to share their story with you. I've edited your title slightly to make it slightly more specific and encourage replies from other members who have been in a similar situation before.
