A friend of MIL's had a baby that passed away from SIDS. For her next baby, she did get a sleep apnoea monitor for the bubs, and found that it majorly added to her anxiety and stress, and it seemed to go off all the time. It just wasn't good for her mental state.

That being said though, I do have a baby monitor, and I quite like it. I can still hear Annika in the other room if she cries, but it just gives me the extra security I guess. It's just a basic model but it does the job for me. When Annika was a newborn, she would power vomit a good 3-4 times a night in her sleep. Whilst I was always worried, and barely slept, she never once choked. She would always turn her head on her side. It's published in all those SIDS brochures that we get these days, that even if baby does vomit in her sleep, it is still safer for bubs to sleep on her back.

I'm so glad the monitor helped you with Nina though! I hope the gastro passed quickly too, poor little girl.