Helen - we didn't DTD for (I think) about 3 months after Gab was born. I was told at my 6 week checkup that it was ok but I wasn't 100% sure about it. Apart from that, I was way too tired to even contemplate it! When I went to bed, I wanted to sleep!! LOL
Neil was pretty good about it. I know he was probably missing it but he never made me feel bad (as I know some DH's can).
You'll get to a point where you'll feel ok with giving it a go - but there's no point forcing yourself before your comfortable. I remember afterwards I was stoked because it didn't hurt at all! It was nice not to have the big preggy belly in the way too!! LOL