It is pretty unlikely...strange things do happen though but it sounds impossible because you would have had to ovulate on the last day of your period or the day after your period AND based on a 30 day cycle you'd ovulate on cycle day 16 or later if you have a 31,32,33 day cycle.
No i doubt it very much,you have to be ovulating to get pregnant since your cycle is 30-33 days, then ovulation would be around.cd18.