Coming off the pill

I had my seven day break from my pill (ovranette) and had my normal period and then Carried on taking my pill as usual for about a week,Me and my boyfriend discussed having baby and decided it was the right time for us to start trying so I stopped taking my pill mid cycle,and had a withdrawal bleed, had sex lots, 5 weeks later I've still had no period,taken tests which are all negative so no baby! But when should I be having my period next? Very confused! I know it takes up to three months for the hormones to get out of your system but just wondered if anyone has had the same issue,just need to know my dates so I can work out my new cycle and ovulation!