At the very end of my period I was feeling nauseous in the mornings and only ate little. I've had a constant pressure or tight feeling in my lower abdomen about 2 to 3 inches below my belly button. I have 2-3 bms a day still. I was burping a lot more for 4 days. Again I don't really have any pain. Just yesterday I did feel very weak almost forced to lay down. Its weird. I have an appointment for an annual check up in a few days. It has been a full week of the pressure now sometimes a warm feeling. ANY IDEA?