Stomach pains?!

This morning after I ate breakfast my stomach started feeling weird. I have no clue how to explain it, it feels like a tingle or a flutter that is just uncomfortable. I feel it both above and below my belly button all around and it feels like it’s getting more frequent. I had all my periods and I had mine for this month last week, I took many pregnancy tests that all showed negative. I have also been constipated for the past two days. I know you ladies aren’t doctors and I should probably go to one, but before I do I just wanted to ask if any of you experienced this and it wasn’t a big deal??