Big bump - I think your right, it is sensible to wait till after the 6 week check, as it's not just like waiting to have sex but waiting to TTC. This should give your body time to adjust and get ready, and maybee your first period to come anyway. If it helps , I started TTC 3 mths birth once, but it was c-section not natural birth like you have had , so maybee your body might need a little bit more time to settle , but my body seemed ready.
Mentally as soon as I started TTC - I had a focus again , my mood lifted and it really helped, I was back in control if you know what I mean - good luck when you do hun
Hope the conultants can offer some feedback re the post mortem etc by your 6 week check anyway , which may help you going forward with TTC