Bumbly, this is normal too! It might be that he can feel a little bit of tension in you too, just relax and it will change. Its good to hear that your DP was able to settle him - look on the bright side as it allows you to have a little more rest. Its good that both you and your DP can settle him..IMO that's the way it should be (and is, in my house).
The not wanting to play with you is classic for this age too, they don't play 'with' anyone. Instead of trying to engage in play with him, make observations instead like,
"oh, are you pushing a car"
"i see you're building a tower"
"lets put this brick on here"
I DO know what you're going through coz I did too...I wasn't actively MN'ing at the time and wish I had been coz it was really hard, especially when you spend all your days and nights caring for them. Instead I turned to one of my HVs, I have a particularly good one who gave me lots of reassurance and told me all the things everyone here is saying. We even went to the local surestart centre so she could show me how to play - I was expecting far too much from DS.
DS is now 19 months and can't stand not being in the same room as me, he's sat next to me at the moment just chilling.
Instead of looking for the next sign of 'rejection' from him, try to relax into it, carry on doing things for him as normal of course, but just step back a little. If he doesn't want to you to play with him, sit back on the sofa with a cup of tea and have some 'you' time - enjoy the time that he is expressing his independence - it won't last long!