I'm really early, but also symptomless. It is very different than my first PG. With my DD I had implantation bleeding, a super sonic sniffer before I even got my BFP, and nausea right away.
This time, nothing. I still nurse DD and it doesn't even hurt my nips which is a huge fear I had while TTC. Although it feels weird, I'm really trying to relax and remember that no symptoms doesn't mean something is wrong, it just means we're lucky!