Help plz not sure wats going on

[mousefue]

Hi don't no if any one can help me out here but I got told my female guppie was pregnant and she
Got really big and she was finding and sitting on the bottom of the tank so I put her in the others tank I went to feed her today but she's not eatting and she not swimming around she is staying in one spot and she not smooth any more she pooing clear stuff so I don't no wot to do with her
And now I am thinking she not pregnant ???????
She is a guppie

Tank 90L
Fresh water
Temp 26-28 c
All water tested and all fine