Poly relationships

Im 30 and in a monogamous relationship with an amazing man. We have been together for over 2 years and are trying for a baby. I've always thought that polygamy was "not that bad" and could see the up side to multiple partners especially when kids are involved, more people to care for a house and kids I even shared a bf with my best friend when I was in like 2nd grade and was totally into sharing a bf with my friend (yeah we were young and it was a kid "relationship" but looking back it may seem like it makes sense I'm now having these feelings) . I had never heard the term poly only heard about polygamy from those dumb tlc shows. I've now heard of the term poly and the more I have thought about it the more I think that I might be open to a poly relationship, I would see myself with more than one man not just sexually but emotionally and I could see being okay with my partner doing the same. I feel like it would be a super rounded life to be able to have different partners bring different positive attributes into a relationship. Wondering if anyone is poly or has been and if they have any advice/insight Not looking for anyone who thinks it's not a good idea and would never/has never tried it. That's fine if you dont want to ever do it but I'm asking for insight from those who have tried it and it either worked or it didn't and why. I haven't spoken yo my partner about this yet since it's a very new idea and feeling and don't want to bring it up unless I'm sure it's something I would want to go forward with.