Hi I've had and ectopic last year with a part of my right tube taken out it took a long time for the home pregnancy test to confirm last time. I tried again during my ovulation time this month but am now 4 days late....I've had frequent headaches, nausea, vomiting, cramps, and a pain in my lower right side and back. I've taken a couple of home pregnancy test and all negative. Could this be happening again?