When did you start using pregnancy specific dvds?

[HaPPy8]

I was just wondering at what gestation did you change from doing your normal exercise to doing pregnancy specific workouts? I normally like running but feel nervous to do my usual runs (i used to run 6-8 miles 3/4 times a week) so thought I would try a pregnancy dvd. However they seem quite tame for obvious reasons and almost a bit pointless at the moment (i'm at the start of my second trimester). So I wondered when is it normal to start using them and am I wasting my time doing them now?

I don't run but I continued to ride for about 28wks. Only stopped then cos centre of gravity had shifted. I think just listen to your body and perhaps swap some runs for maybe swimming which ia relaxing and easier on the joints?

I don't think anyone I know did a specific pregnancy routine in any sport