hello there.thanks for writing your query to HCM. i have gone through your query and will give advise regarding the same.yeah,migraine can be an annoying condition i would recommend you to take sumatriptan tablet which is most effective for migraines and is available as 25mg/50mg and 100mg and maximum permissible dosage is 200mg a day. You can also take propanolol 5mg twice daily on such days. i would advise taking above medications only if you have two or more episodes in a week constantly and is not resolved by ibuprofen or paracetamol. For nausea associated with migraine,please take metoclopramide tablet as and when needed and restrict to maximum twice a day.usually a single one would suffice. diarrhea is not frequently seen with migraine and if present ,make sure you stay hydrated;medications are needed only if they are associated with severe abdominal pain or fever or multiple episodes of loose stools on more than one day . hope i have clarified your query and hope it helps. followup if any doubts are there.take care.good day