On and off bloating, gas, constipation, diarreha, sharp but not painful stomach pains for about a month. comes and goes within weeks. ibs?

IBS or more ?: Abdominal distress as described, particularly if recurrent or persistent, is not to be ignored--its a warning sign that something may be wrong inside your abdomen. Please see my many healthtap answers on the subject of what causes ibs-like symptoms. Not all such problems are serious, but you don't want to miss a problem that is. Tell your doctor location, intensity, duration, timing, triggers...