worried I am doing OPK wrong!

I saw some pitures of OPK's and thought I was getting +. I thought yesterday was it then on a whim I checked today and got a darker line then yesterday. I am so confused now. I will try to upload some pictures so can some one tell me what number is + if any of them are!

[BabyBlue07]

the photo look like you are not ovulate at all... try to buy a 'Answer' brand ovulation kit... it easy to read and use..  That's what I used.. It's just like HPT.  

good luck to you .

[30something13]

That was the Answer brand.

[BabyBlue07]

really? doesn't look like it... I brought the Answer brand at walmart and it's 7 tests in it... It look like a HPT more than a strip..

[SueGre]

I used the Answer brand OPKs, too. They come in a pack of 20 strips. I think there must be one than one type.