Pulsating feeling in lower abdomen ???

Ive experienced this feeling a few times. It feels like a very slight pulse right in my lower abdomen. Its slower than a heartbeat but faster than a hiccup. Idk if the baby is actually having hiccups, but it usually lasts for like 5-10 minutes. It doesn't hurt or anything. Whenever I kinda poke my stomach the baby still moves so I know its not her.. Has anyone else experienced this?