Is This Normal??

I started a campaign a couple weeks ago. Every day since the start I have had between a 15-25% conversion rate. I had extracted all the long tail keywords I could from the broad keyword, so I paused it.
The very next day (yesterday) my conversion rate dropped to 5%. Thinking it was a fluke I let the campaign go another day (today) and its still at 5%.
Could pausing the broad keyword have affected conversion rates?? How is that possible? Everything else is good, CTR is going up, QS is going up, but conversion rate went down when I paused the broad keyword.

See original post by mberman84