Best "at home" workout program

Sooo I was talking to a friend of mine about how upset I've been about my weight increasing wayy more rapidly than it should this pregnancy (my fault - I stopped going to the gym when the HG hit and then when I was able to eat, I just started stuffing my face with everything). Anyway, the workouts I was doing before I got pregnant were a no-go according to my OB. My friend (she's in my unit and super fit) said that she was told about a workout she could do at home while she was pregnant that kept her in shape until she could hit it hard in the gym again and that it was amazing for her. Apparently, it was super cheap, digital (so you can have it on your phone), the people who ran it are way nice, and it was OB-approved (all ladies on my base go to the same OB clinic). Long story short, I bought it and am feeling a bit better about my body and figured someone else might be going through the same thing. Bonus: the company is military friendly and has a discount code for 15% off all of their stuff that she said I could or any of my "friends" could use too. 😏