Anyone out there breastfeed through their entire pregnancy? I have some questions!!

I am 26+3 right now and my boobs still get engorged incredibly easily. The other day I BFed LO at bedtime, and didn't BF her again until bedtime the next night (I was gone the whole day). I was so full that my boobs were spraying milk everywhere.....the way they did when LO was only a few weeks old!!

Shouldn't I only have colostrum right now? Is it possible it won't turn from milk to colostrum? If I still have a lot of milk when the newborn is born, will that impact her negatively in any way?

I keep thinking my supply is going to dry up, but it's looking like it's not.....