Ok, normally I have a pretty heavy to (after a few days) light period flow with unbearlable cramps. but this month fot the past few weeks ive only had spotting and not even everyday just a few times. and i haven't cramped at all. well being as paranoid as i am i took a hpt last week and it was negative. i've been very stressed these past weeks could it just be that?
Stress can certainly cause your cycle to get wacky. Try doing another hpt in a couple of weeks. Sometimes you can have a light "period" but it is actually implantation of the egg in the uterine lining. This may not be what you experienced. The only way to know is to do another pregnancy test. The HCG levels need to high enough to detect which is why it is best to wait until you have missed a period.
Implantation occurs about 2 weeks after conception. This is usually around the time you would have a normal period. Go to your doctor appointment. They can do a blood test to check for pregnancy. This could all be about stress. I hope all goes well for you! BTW, happy birthday!