Exercise and fertility !??

Me and my husband are trying to concieve for about a month. And i workout on my thigh and abs daily for 20min. Today is my first day of my fertile window as Glow mentioned, i am just worried if my working out would affect negativly on my chances to concive. My question would be, should i stop working out on my fertile days and just wait untill i get my period or it would not affect !??