Hi AuntyFlo - we lost a baby at 20 weeks which would have been due in June, and one of my best friends was due almost the same time.
The first thing I would say is I'm really sorry to hear about your m/cs, I hope you're not feeling too awful? Have you talked to anyone about the second one?
As for your friend, you say that you think she's finding it difficult, do you think she'd be upset if you just said 'look, I'm finding it quite difficult to be around you at the moment, I'm really happy for you having your baby but I need some time to process all my emotions before I can talk babies again'? I don't think it would be unreasonable of you.
the other thing is especially with your most recent m/c, it must all be so raw still, that I wouldn't worry about February right now. You might find by then that you don't feel so awful about it, and can face going to the hospital. And if not, surely she'd understand?
In my case the most helpful thing I found was to recognise that my sadness and tears were completely normal, and I was completely entitled to feel sad. But when it came right down to it, I didn't want my friend's baby, I wanted mine, and that's what I was upset about. Nor would I want her not to be pregnant - she was just a reminder of what I'd lost.
You need time to get over this, don't push yourself to do more than you can handle. You will feel better, but for now you need to feel that sadness, it's all part of the process of getting better, iyswim.
You say you haven't discussed it with your friend, do you think it might help if you did? Then it might not be the unsaid thing between you, iyswim.
Hope this rambling post helps a little bit
Sending you lots of courage and hugs
xxxx