What must a woman do who reached puberty and then was negligent in fasting days of Ramadan for years, then got married and became pregnant and did not fast the months of her pregnancy due to her severe exhaustion, knowing that she does not remember the number of days she missed fasting before her marriage?

One must repent to Allah Almighty for neglecting fasting and delaying its make-up. It is obligatory to make up all missed fasting days, both before and after marriage. If the exact number of days is unknown, one must strive to determine it and fast what is most likely to absolve their responsibility. For every day whose make-up was delayed without a valid excuse until the advent of the next Ramadan, one must make it up along with an expiation.