Is it possible for someone to be pregnant, yet have their period late every time and the tests negative?

Absolutely. Some women have actually gone their entire pregnancies without knowing, and I understand this is very difficult for some to believe - I was skeptical, myself, until it happened to a friend of mine.

She was still having her periods, she only gained about 10 pounds and had only a small belly to show (she figured it was weight gain). She felt a little nausea and the doctors did the urine test and it came up negative. I’m sure that if the doctor would have looked into it further and done a blood test, it would have come back positive, but he didn’t. I don’t know how it was that she couldn’t feel the baby moving around in there, but I guess it didn’t move too much. She went to the hospital one night with severe cramps and they found out she was in labour. She gave birth to a 5 lb baby girl. Unfortunately, the baby died at two months old … probably something that could have been prevented with proper prenatal care.

Sorry, I’m not trying to scare you here, just telling a story, really, but … truth be told, yes - it is possible, but these cases really are rare. If you’re concerned, keep pushing for the answers until you find out for certain.