Definitely keep a close eye on your health.

The human body is designed to handle fasts, you will likely go into deep ketosis and wind up burning a lot of fat, which might make you feel good.

However micronutrients can only be stored in limited amounts, and when they run out, it spells big trouble. Potassium comes to mind, if that starts running low you will have muscle and heart problems.

So I definitely recommend taking supplements if you can stomach them.

Otherwise you should be alright adjusting to an initial side effect for a couple weeks. But I also agree to give you pdoc a heads up in case the side effect does not go away soon.