Dumpelstiltskin I am so sorry for you, this sounds so hard.
Some very wise advice and sympathy here. Clearly he is unreasonable to expect you to be over it.
It must be very hard for him to live with your sadness but your words "I know but telling me I'm weak doesn't help! He has also said that it's no wonder my family don't want to know me after arguments. It's like a stick to beat me with." paint a very unpleasant picture of him! Someone who is not necessarily trying to help you move on but trying to be horrible to you. Very worrying!
I agree with MrsTerryPratchett, "...There's some stuff you don't say."
Do you have children together and live together? I am assuming you do have at least one child together, so you should both be working together to make family life work. It sounds like h just expects you to get over it and the words he uses sound abusive.
You said "He was the same after we lost DD2 - don't talk about it, pretend it never happened, no comfort etc."
I am so very sorry, this must be almost impossible to live with but parents do find some way to cope with this terrible sadness.
He sounds like he can't deal with his own feelings and so he is kind of blaming you for bringing emotion (negative emotions into family life/your relationship). He doesn't sound at all sympathetic, and those comments show a horrible side to him.
Have you had help to heal with the loss of your dd2? Depending how you lost your little one, and at what age, there will be organisations to help you. I am sure you know the organisations. Have you tried to access help and how long ago did you lose your little one? If I may ask?
Please do access help. I agree with VioletBam you need counselling. Please see if you can access some counselling to help you move on from all this sadness, not to ignore it but to learn to live with it.
You may need to pay for it, but it might be available on the NHS if this is making you depressed, especially in relation to the loss of your little one.
Please talk to someone (GP first maybe) to see what to do. Especially in relation to the loss of your daughter.
Re "I probably won't know when my mother dies (or my father as she cut him out after their divorce when I was a child and I couldn't have a relationship with him as an adult because I didn't trust him after the picture she painted of him)."
If it feels appropriate might it be possible to trace your father and just see if he may be a part of your extended family network? I do not mean he will supply support etc for you, that would be way too much to expect too soon but it may begin to unpick some of the damage your mother has done in your life. I agree with Memoires about your dad.
Re "but I still love the bitch" I think it is OK to still love her but learning that she can't reciprocate that love appropriately may free you from expecting it. This is her fault and not your fault.
All the best.