I am late for my period and guessing that i'm pg. I have taken two tests which resulted in one negative and one that was very faintly positive...(the negative one was second) I have shooting pains in my back, sore nipples but not breasts, not morning sickness but at night that doesn't allow me to sleep, and no period...Is it still to early for these symptoms to be occurring? Do I take another home test or should I go to the doctor for a blood test?