Ovulation Test

I've been using the ovulation test and since Friday I've been getting the 😊 face. Today is now Wednesday, making it 6 days, how long should I get the smiling face. I thought it was only up to 4 days. We've had sex Saturday morning, Sunday night, and Monday morning was too tired Monday night and had homework for my MBA Tuesday night. I'm not sure if the other days were enough.... back in February I had a miscarriage or an ectopic pregnancy. I sad or because they were unable to find out which one it was. So I'm just worried that it might be to soon. And I'm super confused on why I'm getting a 😌 for 6 days now.