Autoflowers after Showing Sex

So I have a Bloody Mary auto from single seed center as a freebie and decided to throw it in the veg room, after all everyone loves a extra few grams of smoke, but it got to maybe 8 inches and started flowering now it hasn't grown any taller but maybe a centimeter. Is this normal?

It'll look like it is going slow then bam it will takeoff in 1-2 weeks.

Depends on pot size and such man. I've got a Royal Dwarf in a 1/2 gallon that's 8''.

I got it in a 3 gallon grow bag with FFOF already used open sesame and just started using beastie bloomz under a 400w hps.