Don't know about normal but last time I had first totm after 4 weeks - it lasted for 10 days then and 5 days off and it started again - again for 10 days and then another 5 days without and on for another 10 days - I was tearing my hair out and then into a "perfect" 28 day cycle for the rest of the time on CD - and I had never had a regular cycle before - anything from 4-8 weeks.