It's been 4 weeks 6 days since last period. I'm only 3 days late. But the last week or so I've noticed I've been tired more than usual, extremely hungry, nauseous 1 day that I've noticed, nipples are tender when brushed up against or pressed on, lower backache, cramping in lower abdomen. I don't usually get cramps until my period. I have a mild but a sharp headache. I've experienced a little dizziness. When should I test?