It is also happening to me at 23+2 due to preterm labor. Your bowels ate trying to clear out to make room for baby to come out..
I'm 36 and it's happening to me also a lot of pressure and then I have to go more than the usual I guess it's normal.
I'm 36 weeks and yes it has plagued me too. Especially today- bad stomach and very loose bowels. Sorry if TMI but then if I don't go I get stabbing pain in stomache. Been going on about 2 weeks now :-(