You know they're hiccups. They just feel hiccupy!!! And they're very regular, for what seems like ages and more delicate than kicks - more like the fluttery feelings in how delicate they are. Not much help, I know, but my LO hiccuped almost constantly from around 26 weeks onwards... and continued after she was born! lol! She still has bouts of hiccups now. At the time I thought I was crazy thinking she was hiccuping inside me, but she was.
Wondering if this one's going to be a hiccuper too!