Looking for advice

Hi all,
I am very new to this and was hoping to seek advice. My period is due Monday (10/24) and I took the First Response Early Test this afternoon and am seeing two, I think, lines. 
I have read that this test is so sensitive that is can pick up normal hcg so not sure if this could be a false positive. 
I plan on taking again tomorrow morning and trying some other (more straightforward!) tests as well. 
Any help is much appreciated. 
Thank you all!!