Hi OP, I found out last week that I too have miscarried at 5 weeks and I am feeling alone too, despite having a loving partner, but there’s only so much he can say and he’s beginning to run out of words...
I completely understand what you’re going through, and my heart breaks for yourself and others that are going through what I’m feeling and the physical and emotional side of a miscarriage, this last week I feel I have felt every negative feeling under the sun and I don’t know when it’ll stop. I feel like my world is standing still right now and I’m sure you do too... 
I find myself crying randomly, and despite trying to be positive I have this horrible sadness hanging over me like a black cloud.
I have been back and forth the last few days for bloods at the hospital since this all happened and have spoken to midwifes who have all been lovely and very positive and said I should start trying again ASAP once the bleeding has stopped and whenever I feel comfortable, and that’s what I plan on doing, and you should too!
Although these horrible feelings may not leave us for a while, please do not beat yourself up about it. Easier said than done myself as this last week I have gone over everything I could have done wrong to have caused this and I am ultimately blaming myself despite everyone telling me this wasn’t my fault.
In regards to your partner, some men can deal with things differently and you know deep down he will be hurting too as it was his baby aswell. They may not show their emotions in the best way, but remember to love and support him aswell, you both need someone at this terrible time. If I’m completely honest, when I told my partner I was pregnant he wasn’t excited at all, he wouldn’t talk about it and the was in a trance for a good week. Despite not using any contraception and have spoken lots of babies in the past and he expressed how much he wanted a baby as equally as much as me, I literally watched the blood drain from his face when I told him. Then when I unfortunately miscarried, he shed tears and said he really did want a baby. Which made this situation even harder. Since last week, he has been kind and loving and has run rings around me doing everything for me and although this situation is heartbreaking it has definitely brought us closer, I couldn’t have managed this week without him as he has been my shoulder to cry on and it has made our love stronger. He has said several times since then that he wants to try for another baby. I believe everything happens for a reason. He may not have wanted a baby at first, but since our horrible loss he has decided he has and can’t wait to try for another. Please give lots of love to your partner tonight and tell him how much you love him, he will open up to you eventually and you both need to support each other right now! The worst thing you can do is not speak to each other and close yourself off, he may need a little love to open up and talk.
Also, do not think you are a failure, my partner won’t stop telling me that. You have not failed anyone, you have lots of time to try again, and I have heard many wonderful stories since reaching out myself that many women conceived either straight away again or after one or two cycles.
Chin up honey, and don’t beat yourself up. Your time will come again (as will mine) and you are not alone in this. 
If you want to chat feel free to message me x