I have had tender breast for the past 3 weeks and my period was due 5 days ago and i have not got it yet... i have actually spotted for about 10 mins yesterday and today. I also have dizziness and i am feeling sick all the time. my boyfriend was cooking breakfast this morning and the smell of the eggs made my stomache turn. everytime i eat or have a cigrette i get sick right after.  I took a pregnancy test and it came back negative. so i dont know what it could be... plz help if u can. thanks everyone.