Diastasis Recti or Mommy Belly?

Ok so I am 3 months PP and I've been working out since 2 months PP and I can't seem to get rid of this belly. No matter how much I work out I still look like I have a belly bulge. It actually looks like it's getting bigger to me, and it feels hard down the center.

Is it diastasis recti or regular postpartum belly? If it is diastasis recti, how long do I need to do the safe workouts before I know I'm ok. When can I start to do normal workouts again if I do have it?

I don't think my ab separation is more than 2 fingers that I can tell, but I'm not sure. Im not sure I have it, but this bulge won't go away. If it's not diastasis recti, what else could it be and what can I do?

Any tips or ideas would be appreciated!