First Response Pregnancy Test?

Today I purchased a First response pregnancy test. It was #1 on the list of best test on a website I found so I decided to purchase it. The box reads " Pregnancy Test Early Result" and " detects the early form of the pregnancy hormone and you can test 5 days before your missed period". I'm not sure how far along I am as i stated in my last question. I could have concieved as far back as the end of september. My question is, if I am more then a month pregnant and my hcg levels are much higher of a woman who has recently conceived will my results be effected? I believe this test can test as low as 6.5 mcl (mlc?) I plan on taking it tommrow morning but I'm not sure if the result will be correct. Can this type of test be taken at any time not just 5 days before your missed period? It's a 2 pack so i have a extra if needed. I've used a equate one in the ped but walmart was out of stock so I went with my first choice. Any suggestions? Thanks in advance!