Pregmate test reviews?

Back story * me and my fiance have been trying for a baby. And have religiously been using the pregmate ovulation test. Well ordered more as i was running low and ended up running out cause our shipment got backed up so decided we would just take a break for this cycle and go with the flow. I am now 4 days late (which im usually a day or two early) no regular pms symptoms at all. Been having nipple pain that feels like they are being twisted, just a sharp cramp pain for only a couple minutes, cm is still creamy like and since last night i can't keep anything down and have been relying on vernors and crackers. I read reviews they give a false negative and just wanted to know if anybody else has experienced this with the pregmate pregnancy test strips