confused with opk

[kas22]

hi there im new to the site and slightly confused. i would be grateful for suggestions!!

i bought my first lot of opk's friday 12th and came back positive!!

i then took another sat late afternoon around 4-5pm and came back negative!

I read somewhere opk's can detect preg so on the monday i took another one and came back pos!!?? and was much darker then the one i did on friday!
incase they were dodge opk's my sis took one (shes on her period) and came back quickly negative.

i dont another this morning and came back positive again??

since sunday i have had really senseative nipples, they feel bruised! and have a stitch like feeling on the left side (both on sunday, and nipples still hurt)

would any body be able to help me please?????

thanks xx

 

[monroea]

It sounds like maybe your urine was concentrated enough when you got your negative. That has happened to me before... especially when I try to test in the afternoon. Apparently I can't hold it long enough! I'm new to OPKs as well and I know you aren't really supposed to test in the morning, but that's the only time I can do it if I want to be consistant in time and have a strong sample. I'm also on day 4 of very strong OPKs.