Talk to Gynecologist on Irregular Periods

Actually its relatd to mnthly cycle....dat is been disturbd sinc my daughtr's birth (she's 20 mnthx old now)....she took exclusive Breast feed fr around 9 mnthx....n then i switchd her to formula....but mnthly cycl isn't getting bck to track....som times its mor den 35 days....n 1 mnth only 25- 26 days.....initially i ws having 29 days round to clock regular cycle.....my ovulation seems to b regular as i feel fertility signs d nxt week when evr i get periods.....but maybe luteal phase is been lengthened....so wot shud b done? Any thing to worry about? I didn't try any medicn yet....just hom remedies like pine apple, dates milk or coffee.....some times Aspirin too ????