Workout suggestions

I’m so bummed. I’m 30 weeks and 2 Days, and I am pretty sure my cardio/elliptical days are over (for the rest of this pregnancy). Tonight at the gym I just didn’t feel like I could do it anymore (couldn’t catch my breath, felt nauseous, and had to take it wayyyy down). I’ve been noticing it’s been getting harder but didn’t want to have to stop. My time at the gym is my only outlet and it truly helps me manage stress. So. With that said: Besides walking and light lifting, does anyone have any recommendations for workout routines that keep them engaged and leave them feeling like they’ve worked out at this stage of the game?