I'm so stressed out please help?

I took a pg test on the 14th, neg..and then I got my period on the 15th, it lasted two days. I feel nausea, and light headed very often and very very tired.....I don't think I'm pregnant cause I got my period and I got a negative the day before....but I feel like I am...is it just me doing this to myself???I'm so stressed out please help?
I hate when people say this, but I think it's all in your head.
Go to the doctors! Something could be all messed up with your hormones or your ovaries.
Good grief. You aren't pregnant. Stop making yourself ill over nothing.
Best to check with your gynecologist...
i think your kinda depressed.
i get this all the time, i wouldnt worry its nothing. Pg tests are alomst 100% accurate the day b4 ur period. If u are still rele worryed go to your doctor.
There could be a lot going on here.
1. Sometimes pregnancy tests produce a false negative or false positive. Maybe you should take another test or go to the clinic in your town to retake the pregnancy test.
2. You may just be sick. If you have the flu or even a cold you could feel nausea and lighted headed and definately tired. Don't take medicine for it though before you find out if you are or aren't pregnant.
3. Since you seem to not want to be pregnant, you may be under a lot of stress about this which can throw off your period. Just calm yourself down and don't worry so much about this until you have a for sure answer.
Just try another test or two. Hope things work themselves out.
If the doctors can't find anything wrong, then just lie in bed and rest for a while! Drink tea not coffe and don't eat any sweets!!!!