Im so sorry about the loss of your mum too. I cant even begin to imagine that kind of grief on top of the grief for your Jack. I can only speak from my personal experience as that's all I have to go on. I had a rollercoaster of emotions after Cara. I was totally numb for about 2 weeks - no emotion whatsoever to begin with. No guilt, no sadness, nothing at all. Equallt no happiness, no joy, no feelings to speak of. One night it all just hit me like a tidal wave, and with that came the urge to be pregnant again. As soon as I stopped bleeding we began trying. It took us about 3 or 4 months to conceive (all previous pregnancies were immediate on first attempt) so although 4 months doesn't sound that long I was pulling my hair out.
I thought once I was pregnant I would feel that joy again, but that didn't come until the moment Sienna was in my arms. It's very hard to let yourself enjoy your pregnancy after going through that loss. Even with great odds at the nuchal test and all the scans I had throughout the pregnancy (I was scanned every 4 weeks from 16 weeks to 36 weeks at my GP's request, as Cara had a heart defect too).
I dont think anyone can say when you should start trying, only you will know when you are ready. But I completely understand that urge. The guilt too, that's something that I found a real battle and that resurfaced many times before I came to accept it for what it was. As mothers, we protect our babies. To have to make the awful decision to end a pregnancy of a much loved and wanted child is completely against our natural instict. But I learnt to accept that the decision I made was out of love for my baby, it was not selfish, it was not the wrong decision, it was not the choice I would have taken for any other reason has my baby not had the problems she had. I have 4 daughters. 3 with me and one with wings.
I can talk about her without crying. I refer to my pregnancy and remember the time she waved at us - and I can smile. I loved her. As you loved Jack and will always love him. I needed time to grieve, and I continued to grieve after Sienna's birth, and still grieve for Cara when I need to. But I no longer have the guilt I had to start with.
There was something on Facebook not too long ago that said, 'when you lose someone you love, you dont get over it, you just learn to live without them'. And that I have found very true. I will never get over the pain of losing Cara, but I have learnt to continue living my life with that loss.
Sorry for the big deep post. I hope something I say helps. Ghislaine was a huge support to me back then (hello Ghislaine) and there are so many ladies on this thread that can relate to what you are going through. I hope today wasn't too bad xxx