Talk to Gynecologist on Irregular Periods

I'm a 36 year unmarried female and has never ever faced any problem regarding my periods, my cycle is usually 22 or 23 days max. Last in June I got my periods on 11 since then I haven't. In the month of June only I got K kort injection for my keloid on June 16. And in the same month I was on antibiotics for around 10.days. I have also lost weight recently around 4 kgs as a result of intermittent fasting. I'm under too much stress as feel all the symptoms most of day but nothing happens actually. Plz help me I way too worried. Also I got my TSH done in early June which is also normal