Ugh, I don't know what to do!😫

I'm on Mat leave right now. I have until July off then I go back to work. I cannot go back to my old job (unless I can't find anything else) my coworkers and boss harassed me during my pregnancy to the point that my dr ended up putting me on sick leave to get me out of the toxic environment. Anyway I saw a job add that I would love to do, this company barely ever hires!!!! However I have 7 months of mat leave left. My baby is 3 minds old and my son is 2 and home with me as well. I know if I wait the opportunity will be gone but this is my last baby and last Mat leave. I feel like I might regret going back to work early. But I'll also regret not talking this chance. What do I do ??? 😣