I am a girl of 28 years old, 1.68m, 66kg. I have no medical problems. my problem now is a delay in my menstruation cycle (8 days of delay today). I moved from Italy to India for work the 19th of july (while my last menstruation was the 4th of july - my cycles are not always regular), i was too stressed, i had some stomach problems connected with new food and i had also fever yesterday (and i took some medicine). I had sex with my boyfriend after 4 months and a half (as he was waiting for me here in India) and it has always been secure (or at least it's what i believe). have i to worry for this delay? what could i do? Thank you