i'm sexually active and recently i got my period after being almost 2 weeks late but its been lighter than normal. before that i was having alot of sensitivity towards odors which would make me feel queasy. and for the last couple weeks i've been getting these light cramps in my lower abdomin; like this odd sensation. i checked with the doctor and they say its not pregnancy, but i've also heard of women not getting positive results when they are pregnant.

any help would be good
thank you