I know this all too well. I was fobbed off as being depressed for years until I was finally believed and it was found my thyroid function was virtually non existent.
More recently though, Citalopram has been amazing. I have always been against ADs because most often there is a real physical cause for depression, not “just a chemical imbalance” so I’d rather address the cause than the symptom - like others have said, divorce!
Plus I’ve reacted badly when trying ADs in the past, but I started on a super low dose of Citalopram after a horrendous break up and felt better within a week.
After 6 months I thought I was ok so I stopped - no side effects as such, just the odd headache, but I found that I was getting snappy and tearful again, so have started them again. Happy to stay on them for life tbh as I can feel properly happy, euphoric occasionally, but very rarely cry anymore. It’s magic. Absolutely recommend giving them a go if you haven’t already.