Periods delayed - don't know the causes.

Hi, age: 25 and weight 87kg, BMI-obese. I am having irregular periods since 4-5 months, have been tested negative for thyroid, pcos and pcod, no cysts or fibroids. Many a times, periods are delayed and hence checked for pregnancy also and it's too negative. Periods date: Dec'21: 29th -2nd Jan Jan'22: Skipped Feb'22: 18th- 22nd ( gap of 51 days) March'22: 28th - 1st April ( gap of 38 days) April'22: no period started with light pink spotting throughout day, light bleeding no use of pads from 22nd April - 29th April ( 8 days) May'22: heavy bleeding, periods type from 30th April onwards, it didn't stop till 4th May, consulted gynae who told to have E-Tex T tablet and after consuming till 8th May periods (bleeding) stopped. June'22: no periods yet (gap of 48 days) All this while, i have been given texakind around February to bring periods, and was hospitalised in April for stone surgery due to which had kidney and ureter infection. need help on next date of periods, or how to get periods