First of all, do not Google your symptoms! It most likely does not pertain to your particular individual situation. You will just scary yourself needlessly which will increase your anxiety. We cannot self diagnose ourselves. This is what happens with anxiety.
or negative thoughts are just that. They are only thoughts made up by our mind not based on fact. We have to learn how to let them go. The fact that you had screws and plates in your leg and that you are standing for eight hours a day, running after children can definitely account for why you have a backache and achy leg.
what is happening is that fear has taken you over along with negative thinking. Remember, FEAR stands for false evidence appearing real. In other words, your mind has created the worst case scenario which is not based on fact. You are attributing your symptoms to this. There's a much higher likelihood that your symptoms are caused by the history with your leg. I don't even have a leg issue but when I stand eight hours a day my legs get very achy and my back hurts.
here's one thing you can do:
when you lie down in bed, listen to audio meditations found on YouTube for anxiety or overthinking or negative thinking. They completely calm down my mind and give me a New perspective on how to think. Now when I get a negative or scary thought, I don't try to fight it off. Instead, I calmly acknowledge the thought for a few seconds then I watch it float away and dissolve. Do this every time you get a negative thought.
then go right to your breathing and focus on that. A meditation for that is listed below.
start by listening to these meditations: with earbuds if you have them.
detachment from overthinking
10 minute breathing meditation
mindful meditation for relaxation by Glenn
there are many wonderful meditations on YouTube for just about anything you can think of. I think they could really help you!
if you can possibly get a book called mindfulness, it gives you a new perspective on how to deal with all of this. It's a white book with a ball of string on the cover.
remember, people get all sorts of aches and pains in the vast majority he of them are nothing serious! You have a good reason to have aches because of your leg.
"What if" thinking is a waste of time. It's not based on anything concrete or factual. I did this for 20 years and I wasted all that time because fear had a hold of me. I can never get back one of those days now because once they're gone they're gone.
hope this helps a little bit 🌸🌸🌸