I Have Had A Bubbling Sensation In My Lower Legs

I have had a bubbling sensation in my lower legs / calves for the past six months. It ebbs and flows, somedays is more pronounced than others. I feel it more while I'm sitting down or going to bed / getting out of bed. It feels like little bubbles are popping, or a little twitch here and there. It does not cause me any pain, however I'm concerned that it is a sign of a larger issue