Ikota, you need to increase your potassium intake ASAP. I am really glad you took the advice and had a blood test done, however it shows that you are on the low end which means if you do another test in another couple of weeks you will be out of range (just my experience).
(Sorry to be bugging you about the potassium but it is better if you are higher in the range than you are right now as heart arrythmia can come quickly)
From cancer tutor:
A Tingly, Prickly Feeling, Particularly in Your Fingers, but Possibly in Your Lips or Face
This is a common side-effect and generally happens within the first week or two. It should NOT cause any alarm. Generally it will go away. Chemotherapy can also cause this side-effect.