That's so awful, I hope things brighten for you soon. Between dysphoria and depression, there's obviously a lot of interplay. Being that down for over a week sounds more like depression to me judging by the bit you've said here. Especially if nothing is making you happy or the things that used to just aren't cutting it.

There's not really a short cut for depression or any mood disorder, but many people have and it's possible for you too. Some of the "easiest" (nothing is truly easy when you're feeling as down as you have) is to keep a regular sleep schedule and meal schedule. Meds can help but it takes a minute. It's weird but sunshine and the outdoors can help too.

For gender dysphoria, the treatment is transition - so whatever that means for your gender identity is what you should keep doing and trying to do/experimenting with. Binding if breasts bother/painting toe nails if you wanna femme whatever it is (I didn't ask earlier lol, don't wanna assume) are things that can be done that are more easily hidden if you don't feel safe in public. Having a friend you're out with is great because then you can hang out with them as out as you feel ready for!

coming out almost always creates a rubber band effect for me. it's like the vulnerability of it all is extremely triggering? and depending on my closeness to the person/people it can take me anywhere between a couple days to a week or two to emotionally recover. i think this is somewhat common bc i've seen trans people on reddit talk about it too