At first my cycles where regular now they have became off track sometimes and comes early or late like 22,36,27,23,24 days apart and like 3 times i have bleed during sex would be the reasons for this?

Your hormones are: in flux for some reason and will need to be regulated after so many months of irregularity. See a GYN since you will need a pelvic ultrasound to rule out some intrauterine problems such as fibroids or growths. Other things could affect regularity of a cycle including nutrition, exercise, weather, stress, illnesses, psychological well being, etc.