Currently 19 weeks pg with my first and have been eager to feel baby move for weeks now. Last night whilst watching tv I suddenly felt what I can only describe as a twitching sensation in my lower right hand side. It lasted a few mins and I have felt it again a few times today when sitting down. Could this be the baby moving? I'm a bit confused as it doesn't feel like bubbles or butterflies like many people have described to me but more like a muscle spasm. Has anyone else experienced this before or is it more likely just a muscle spasm?