Sex after miscarriage....

So I recently just lost my baby in a pretty traumatic way (blow to the stomach) and I'm having a hard time getting over it. Especially when it comes to having sex with my SO...he understands thats its still fairly new (happened 2 weeks ago) but I'm struggling because I want to make him happy sexually but I just have ZERO sex drive.. Our relationship is pretty rocky to begin with so we can't afford to have more problems. Yesterday he complained that we stopped having sex, so this morning I tried and we ended up stopping because he could tell I wasn't into it..I "lacked passion". Has anyone been through this and if so, what did you do/how did you get your libido to increase? I'm extremely desperate to fix things with him.