Welcome to SR! You will find lots of support here. Dee's link about plans is a good starting place. Also, you should join the May, and soon to be June classes, you will find a support system of people who have begun their sobriety journeys at the same time as you.
I'm glad you are working with a doctor. Are you also seeing a psychiatrist to discuss your concerns about suicidal ideation a and the possible effects of your medication? If not, that would be a great starting point.
Start by focusing on today, make a plan to stay sober, do something to occupy your time: go for a walk, read a book, spend some time readin and posting on here, binge watch a favorite series on Netflix...
You can do this. Looking forward to seeing you on SR!