Ketosis?

So I've got a massive headache... does this mean that I'm finally going into ketosis?! Blood sugar just now was 121, so my numbers seem to be getting steadily better (although not as fast as I might like.)

[UPDATE] The strip is pink. Just barely, but definitely pink! I'm thinking it's probably the L-carnitine. More good news: blood sugar at 7 or so was 115! This is the lowest reading I've had since I started testing.