I have been told you can't have a false positive only a false negative. I believe there might be a possible way to have a false positive depending on medications someone might take not 100% though. But from my understanding you can't have a false positive. My home pregnancy test was a faint positive as well it was the store brand so I thought maybe I did it wrong too or checked too soon when I told my partner about the results he also said it can't be a false positive he is a chemical engineer and worked with feminine products for a while so he knew a thing or two when it came to pregnancy test.
I'm not sure if your asking about just the test or also having another child this soon? But in my opinion it depends on you I know alot of women who are fine with having kids back to back and others who don't or feel they can handle it. I don't have experience with having kids back to back this is my first pregnancy. I've seen a few post on here about women who do have kids back to back hopefully one of the experienced mommas on here can help
The doller store tests didn't show up untill the next day for me when I was that early. I would say there's a good chance your pregnant. I would either buy another test or take the dollar store test again in 3 or 4 days.
I just took a first response one and it was negative :/
I don't know how/why there's a faint line on the cheap one
Could be an evap line if it has been sitting for a while. That's why instructions say to discard after so many minutes. Evap lines can appear and make it look positive when it's not.