1997 s10 Blazer

hey all. This is my first post. i have a 1997 chey Blazer that acted up with me about six months ago, and it stopped by itself and yhis week started up again. This is what it does. no matter if it is cold or hot it is the same thing. When you turn the key to start the engine all the you can hear the gas pump, all the guages are on, and the battery has juice. I turn the key about 20 times and it will start all of a sudden. Sometimes it starts on the first try. I checked the starter, battery and alternater connections and all seems fine. Today every time I start up the Blazer it turns on the first time. it is driving me crazy

Frank