I did a trial while breastfeeding ds1; they weren't keen on me using one machine unless I was having a 4 hr gap after using equipment before feeding due to toxins moving out of body (they didn't want it going through milk to ds). They did say if I was still feeding that if I used the machine with the full body suit it could be painful with letdown type pains.

I only did 3 sessions on the bike with 1/2 suit and it worked I lost weight & cms in that time. If I had money (for gym etc) & time (when they're open) I'd consider it (if I wasn't breast feeding or pg) - they did also have an eating plan which seemed mostly sensible (there were a few slightly odd things relating to time for memory)

(I don't think you're still feeding but thought I'd put info out for anyone else)