First of all, welcome to psych central! I hope you can find the support you need here. I've also struggled with SI in the past. I've currently got a little over 2 years under my belt (my longest stretch by far). I can only imagine how difficult this is for you right now. I know you said you're not taking any meds, but are you seeing a therapist or a counselor of any kind? That may be a good next step, especially with all the external triggers right now. He or she can help you get some healthy coping skills.

If you're interested, here's a couple things I've found helpful. Of course, every person is different. I journal. Sometimes obsessively. I count things, also sometimes obsessively. When I can get out of bed, walking helps, even if its just pacing around the room. I talk to my cat. I know it sounds strange, but he listens. I scream along with heavy metal music. Lots of people swear by calming routines (baths, teas, oils, etc), but I've always had better luck with more physical stuff (cleaning, screaming with music, anything that gets me moving). Again, everyone is different. Sorry this was such a long response. I hope things get better for you soon. I'm on here all the time, so send me a message if you ever need to chat!