I'd say if you want to scream do it....seriously...when my Mum died I waited 'til I was alone, went upstairs, shoved my head onto a pillow to muffle it slightly and just let it out...seriously the phrase better out than in with these feelings and thoughts is so true....I'm not sure if you're an exercise type person, but something physical like running/cycling or maybe a kickboxing or martial arts class when you're feeling able enough is a good way to channel and vent.
Beat a pillow, shout when you want to, write if it helps, you have to do whatever you need to get through this period without bottling it up and having a meltdown
There's a time to be strong and there's a time to realise you need support and ask for help - keep posting and take each day as it comes with the diet xx