[ Pregnancy ] Open Question : Question about pregnancy symptoms?

Is it possible to have pregnancy symptoms (i.e. tender breasts) and still get a negative on a HPT when tested early? I've never gotten tender breasts before my menstruation. But, it seems like your body wouldn't start showing signs unless you had started releasing the hormone that HPTs pick up. I like to think I'm a day late, but my cycle is anywhere from 27-29 days and I'm on day 28 and it hasn't started. I took the test on day 25, solely because my husband was going to the doctors to give a semen sample, and I was just checking to see if it was necessary. Alas, it was negative. It's driving me nuts!