Talk to Gynecologist on Irregular Periods And Fertility

i missed my eriods for 3 months and now spotting and clots are released and ita been one month almost. I am not going to doctor because they always give me 21 days tablets like diane or primulute n. I got married last year. i wa 150 kgs and lost 45 kgs now. gym diet is on. I just want to know is there anyway to stop and regularize my cycle having no contraceprive effects plz. trying to concieve if Allah wills but to rwgukarize my cycke i dont want to take any contraceptive pills. please help