I'm not really the right person to answer this but might as well give my input on what I do know. So you have a stimulant, an SSRI and birth control (I think?). I can't tell you about the stimulants and the birth control pills but the Sertraline won't do the job. Those meds are created in such a way that it's pretty hard to CTB by overdosing, there's something like a limit where it wouldn't matter if you take 10 or 50 pills, your brain's gonna react like it's taken 10 (just an example) and worst case scenario would be ending up with brain and organ damage. In general it's pretty hard to overdose with any of the meds you have in a way that's lethal, it's just too risky.
Other people can share their thoughts as well, I'm not exactly an expert. I'm sorry that you don't have better options
