Are these hiccups?35wks

I'm 35weeks tomorrow and this past week or so I've been feeling rhythmic, gentle taps low in my pelvic area (nothing like her usual strong rolls or kicks.) Baby is head down so I'm wondering if this is her maybe having the hiccups? Or if not what else could it be? Im aware of it most mornings while I'm lying in bed and it can last up to 20minutes