Honey, you have a serious health condition, please ask your Doctor.
I work in healthcare (cardiology) and as much I love this keto stuff and think it changes people dramatically, it does not mean keto is magic. Keto shouldn’t mean we stop going to doctors.
Definitely make sure you are staying hydrated, that MAY have something to do with it, but no one on the Internet can tell you for sure. Potassium is very important. You can find answers to these levels by seeing your doctor and getting some labs.