My cycle is 28 days. In march, I had sex on 15th and 19th (using pull out method) and got my periods on 31st march. For 4 days. With heavy, blood clotting for the first 2 day?s and lightened on 3rd and 4th day. However, in april, I had no intercourse and my periods are delayed for 4 days now. I?m on the 33rd day of my cycle. Am I safe from pregnancy? Also to add to it- i?m studying so I might have gained weight during quarantine and stressing too. Please guide. Should I be safe from pregnancy because I got regular periods last month? Any advise will be useful. Thank you.