I have to say that firstly I'm so sorry you've been through this, and also that I'm so glad you've reached out. I had a medical termination at 7 weeks in February, and although I was certain, and my DP supported me all the way, I felt a deep sense of loss afterwards.
Physical loss and emotional too. I felt physically empty which was a strange sensation I hadn't anticipated, and I was mentally broken and devastated. I was also traumatised from "the day" and how it was so much worse than I was expecting. I was mostly in bed for weeks after because I was so depressed and struggling so much, and I realised fairly soon after that I actually do want a child and honestly it's pretty much all I've thought about since.
I'm still struggling now, but far better because I've come to terms with it now and I can see that I did in fact make the right decision in that moment, both for me, my partner, and future child. My mindset has shifted dramatically and now I am in a space to organise my life, change what needs to be changed, and I know we will TTC in the future when we feel that we're in the right place.
What I'll say to you is to allow yourself to feel all these complex feelings now, recognise that you did make the right decision even though it's painful, and remember that you cannot change the past but you can create your future. Now is the time to get absolutely certain on everything in your life, relationship included, and also work towards anything that you want to do, like moving to an area you love or saving up money. Look to the future when you feel ready, but allow yourself to mourn.
I'm planning on marking my estimated due date by lighting a candle and spending the day in quiet meditation and contemplation whilst also continuing to work towards the future, because I know this will be helpful to me. Perhaps you could do something similar.
Also remember that sometimes the worst things in life end up being blessings once we look back on them years afterwards. We can't see that in the moment, but this could be the turning point for you to have the best life and family you could ever imagine. Better than you can imagine right now.
Sorry this was so long. Know that it gets better. 