Suggest Treatment For Infertility

Hi i was on the depo for 3 years untill me and my husband decided we wanted to try for children i am 21 just turned i have been off the depo for a year in total and 9 months since it ran out i had a period first in aug a light one then then oct next then one nov 18th normall period but lasted two weeks now back on again dec 15th normall period again how long can it take i taken folic acid and making love regular i am also tryin to follow my ovulation