Stay strong honey. Everytime you feel like hurting yourself, tell yourself, "Not right now, maybe later." Keep yourself busy. Find things to take your mind off of the depression like cooking dinner instead of ordering out or cleaning. I know it's a dark and lonely place where you are, but trust me, many people know exactly what you're going through, myself included. I've been in that place where you lose all perspective and the world just seems like one great big black hole. However, there is a way out. You've made an immense step by finding yourself a T that will hopefully fit you better. Yes, it takes time, but don't think about that. Try not to think about what the future holds. Don't think about anything beyond the rest of the day. Some may dispute if this is really helpful, but when I was going through a particularly rough patch and honestly felt like it was only a matter of time before I took my own life, I went through each day thinking about crawling into bed at the end of it. Once I was in bed I tried to just mentally immerse myself into that place of comfort and imagine I was going to stay there in bed forever with nothing whatsoever to worry about. That was my thing that I looked forward to every day, and it kept me going until the end of each day, until I reached my turning point.
I imagine others have already told you about the National Suicide Prevention Hotline. I've gone through phases where I was calling them twice a day on average. It became a routine almost. They may talk to you and try to help you figure out some ways to occupy yourself and get through the next few hours if you're feeling particularly low.
Remember, I'm here too ;). You are welcome to message me at any time for any reason. I've been where you are and I've become pretty efficient at getting out of it.