I am 18 years old and I have recently had a late period it was a week late and when I did get it. It only lasted 3 days when it usually lasts 7. and I have been getting sick a lot not puking but I will wake up in the morning feeling sick and sometimes it will come and go all day. Breast has been sore. But I have beem told that it is to early for me to test positive because it's a little shy of a month?