3days late

melanie
I was suppose to get AF Thursday.  She still isn't here.  But I have taken a couple tests and they are negative.   Could it be because they are very cheap ones? Should I try a first respond in the morning? Tomorrow is hubbys bdsy and would love to tell him then.   I have had cramps and a little backach and very tired. A little nauseous at times.   Wonder if my cycle is just messing up or hcg just taking long to show up.  What do you think?