Hi, I m 18 and currently on Microlite pill and have been for the past 8 months. I normally get my withdrawal bleed on the second day of the 7 day break, but it was due today and still hasn t arrived. I have been very careful with taking the pills at the same time everyday and I haven t missed a pill. I had un-protected sex with my boyfriend on the first day of starting taking the pills this month, but it was only for a second and nothing happened . I don t see how I could be pregnant but I m really worried about why my period hasn t started yet. I am going for a small bowel X Ray tomorrow and need to be within the first 10 days of my menstural cycle for it and I have had to fast and take a laxative today as preparation for it, could that be a reason for the late period? And are there any ways I could get my period to start tonight before I have to go into hospital tomorrow or else I cant get this X Ray done. Please help thank you