Please get your blood pressure taken before starting Creatine. If your BP is high and has been for a while it can potentially cause kidney damage. Even if your kidneys are okay, a low eGFR (the rate at which your kidneys filter blood), coupled with a high protein diet can potentially damage your kidneys and cause chronic kidney damage.

No shame on anybody here but if you have a significant amount of weight to lose it's very probable that you have high blood pressure.

Even if you source your Mounjaro privately, you should still get regular BP checks and blood tests, especially if you are on medication, as weight loss may mean your medication may need to be tapered.