Hello ma am and welcome. All of your symptoms can be experienced during pregnancy except for diarrhea at this stage. Although it could be due to a mild hormonal effect, as it is quite early for the grpwing uterus to cause irritation to the bowels. I would request you to report to your doctor for an elaborate evaluation to make sure all your symptoms are simply due to pregnancy and nothing else. But please remember to keep yourself well hydrated in order to avoid dehydration. Hope this helps. Best wishes.