I am a 25 yrs old and on the pill in end off oct was the last tym my boyfriend n I had sex by the 4 of nov I seemd to had an bladder infection and the was a pinky colour discharge that I tawt was due to the infection by the 6 of nov I seemd tohv had my period but it was very little blood on my panyliner so I used a pad 4 that day n only seemd to b like a brown ddischarge n it was over I normaly have my period for 4 to 5 days and bleed quite heavy and have a lot off pain I feel pregnant and took a test that hv up negtive but there hv been sum change in my eating habbits I want to know if I could b o could it be due to stress

Stress will delay your period. Diet and sleep will affect it too. If you wear down your body it will respond in odd ways.

It is hard to decipher your post. I would wait until you're two weeks past your pusedo period and then take a HPT. It will probably be negative, but just to be sure. Are you back on birth control?