someone help plsss x

So i tested with an opk this morning with Clearblue advanced digital and got my 6th flashing smiley (high fertility)(With the same holder ive been using for a few cycles now). The whole day something kept telling me to test again in the evening, so i did and got a solid smiley! Does this happen or is my holder defected? I tested with a new holder too but it came up as a blank circle, but thats because all new holders start with low as a baseline right?