Hi girls, hello everyone! My first long-awaited pregnancy — 5 weeks; I…

Hi girls, hello everyone! My first long-awaited pregnancy — 5 weeks; I'm very tender/careful about it. I've started to notice a pulling sensation in my lower abdomen, and some heaviness low on the right, like where the ovary is. My discharge has become slightly yellowish. Could this be dangerous for the baby, or has anyone else experienced similar discomfort in the lower belly area?