I don't think it was mentioned above, so I'll say you might research "compound grief". This can occur when you experience multiple losses at once.

Having gone through this, I can tell you what NOT to do. Don't try to suppress your emotions, but try not to wallow. Don't allow stress to overtake you, actively work toward managing it if it gets to be too much. Cry and get it out if/when you can. Take GREAT care of yourself so that it doesn't damage your health. Grief can wreck your body. Lean into any support system you have and avoid negative people. Take life minute by minute if you have to. Don't beat yourself up if you're not coping well.

Good luck, I hope it gets better.