Delayed periods. For a few more days?

"I am 24 years old (unmarried) and weigh 46 kilograms. Since reaching puberty, I have struggled with irregular and prolonged menstrual periods. In 2022, I experienced a delayed period, followed by 20 consecutive days of bleeding. I consulted a gynecologist and underwent blood tests, which revealed normal results, including no thyroid issues. However, my prolactin levels were elevated. The doctor prescribed Deviry tablets, which I took for five months. Alongside lifestyle changes and improved eating habits, my menstrual cycles regulated, and I last menstruated on December 24. This month, my period is delayed, likely due to consuming peanut butter, processed foods, and fast food, combined with exam-related stress. Currently, I am experiencing cramps and back pain without menstruation. Should I resume taking Deviry tablets now, or should I wait for a few more days?"