Ughh...

So I finally had what I thought was a positive opk right at the end of December. I used preseed and I've had really bad acne, constipation, extreme discharge sometimes, and a weird appetite. I tested Monday, Jan 15th as I hadn't gotten me period the day before when it was due. It was negative although I got an evap line-or what I think it was because I didn't look at it after 3 minutes (it's the cheap Wal-Mart ones). I've never had them develop a line. Ever. Well here I am with no sign of AF but too scared to test because I just don't feel pregnant but I don't know if it's just because I'm discouraging myself...