Officially 9 days late for my period. I took a test around 3-4 days and it looked like a very faint…

Officially 9 days late for my period. I took a test around 3-4 days and it looked like a very faint positive if held up to the Windows for better lighting (the lighting in my house is so bad in general) but it was a blue dye test. Gonna go to Walmart today and get a first response red dye or maybe a clear blue one that says pregnant or not pregnant. I wrote down a list of "symptoms" I was having as they came along. I am not trying to get pregnant in any way so its not like I am wishful thinking. When should I test again?