Could it be hiccups? If the baby had turned head down already that would explain it.
Also, I swear my little guy punches my cervix - or maybe he head-butts it because sometimes I feel a sharp pain down there. Asked my Dr about it and he said it was harmless...but you can always call yours if you are concerned.
Hiccups! Mine get em daily
Yep, I agree. Sounds exactly like hiccups. Especially if they are in rhythm.