My period cycle is normally 29 days or so i thought but now had it early at 24 days what is my average period cycle and when am i likely to ovulate?

Only you can answer: Only you will know your average cycle length by tracking it on a calendar over the past few months. Ovulation occurs consistently about 14 days before your next cycle. If you know how many days there are from the first day of the bleeding to the next during your normal cycle just subtract 14 days. This allows you to predict when you should be ovulating.