Hi Jill.
What sort of budget are you talking about, a fairly large budget could be anywhere from $4 to $200 a day... personally I consider any money spent of cpc should be spent on
seo and organic results, but everyone knows that
but I wondered if maybe you cost per click was high and daily budget had been used up, so your ad wouldn't show, or if your daily budget was limited somewhat, how google speads out showing ad's over the whole day.
Lynny