Irregular cycle

[selt]

My cycle is very very iiregular. it can be as long as 62,52 days and as short as 24 days. in jan i had a spot on 3 & 4 jan,in feb it didn't come until 5 march as it stands for a 28 day cycle am suppose to be around my O period. any one with advice on when my O day will fall bcos i hav been ttc for 9mths now i need your help plssss.