advice please

Hi I am currently now 3 days late I have still not had my period I have been feeling sick the last 5 mornings now but haven't actually been sick my breasts  have been very sore and feeling tender I have also been feeling rather bloated?? I have taken a test but it was negetive :(, anyone think it's a bit early or I'm I defiantly not pregnant? Any advice or opinions would be greatful. Thank you.