Hello, Diarrhea and constipation can occur due to certain hormonal changes that take place within the body during this time. Drinking plenty of water (1 liter per 1-2 hours until symptoms subside) and snacking on salty crackers. Eat a high-fibre diet which contains lots of wholegrain cereals, wholemeal bread and fruit and vegetables. Try to avoid drinks which make you wee more often, such as tea, coffee, cola and alcohol. These diuretics may dehydrate you and make your constipation worse. Take plenty of Fresh fruit, such as oranges, grapefruits, tangerines and blackcurrants Hope this helps. Please write back for further queries. Wishing you good health.