Help me

Nicola
Someone please help me!! I was suppose to come on .on the 8th of this month ... I haven't come on .. I have sore boobs now and again bad heart burn and very tired I did a test today and it said I wasn't pregnant could I of done the test to early or couldn't I not of come on because I have a lot to be stressed about I am freaking out am confused I don't want to get excited yet I would be very upset if I wasn't xxx