Has anyone's LO suddenly started hating baths?

FoodieMama

My LO has loved baths ever since we got the Tummy Tub at about 6 weeks (she was colicky and hated the infant seats so this was a lifesaver).  She is starting to stand up in it so we've been transitioning to the regular tub and she did fine the first week.  She played with her toys, splashed, etc.  The last time I bathed her in the regular tub she pitched a huge fit.  Today I tried the Tummy Tub just to see if it was the regular tub and she pitched a fit again.

Any ideas?  I checked the water, so it should not have been too hot/cold, and she was otherwise happy both times until I put her in the tub.