Rach, I know exactly that feeling! I had expressed for DH to feed DS when he was younger as I had to pop out for a short time, and when I got home DH was feeding him and it just wasn't right watching him feed from a bottle! It's such a special time feeding, that I can understand not wanting to miss a second of it.

Can't help you with the breastfeeding/TTC question. I got AF back after 3 months even though I was exclusively breastfeeding and even though we are TTC again already, that means nothing given it took so long last time. There is a TTC while breastfeeding thread somewhere that you may be able to get some more info from.

Good luck with TTC again. Hopefully you wont need IVF again (We did 6 cycles with no luck - 2 early m/c, and ended up getting our BFP naturally, so it definitely does happen!)