I think we all own our own past. I don't think intimacy or even Love requires full disclosure of how far back in the past we disclose anything at all. For example, maybe someone ran over a cat and didn't stop, or even worse did it on purpose (not me, though I held my darling cat in my arms as he went). It's unlikely, though, that person went home and disclosed what he'd done and the thrill he got out of it. You haven't done anything like that.
I wouldn't disclose my childhood hallucinations of bad stuff because I know what they were about and, awful as they were, they originated in my shit family life. Nevertheless, they played a part in becoming who I am now. But they are mine and have nothing to do with anyone else.
There was a time when you weren't a sex worker, a time when you were and a time NOW when you're an amazing help and support to others. This is who you are NOW and this is who someone will fall in love with. You should, imo, fully accept you are and the no doubt painful journey that has brought you here - as in being perfect for who you are now and what you DO for others.
How would it benefit anyone to disclose a part of your life that is over? You aren't lying about who you are now, you don't have to validate or justify to anyone how/why you're so good at helping others, nor would you be lying to anyone by owning your own stuff and not sharing its origins.
I don't accept that "secrecy" is the issue because otherwise we'd all be second guessing and (over?)sharing every move we'd made in life from birth and forget that life is mostly our own personal journey.
There are differences between privacy, secrecy and intimacy. Some don't accept that; some think there can be no trust without an inherent entitlement to everything in a person's heart, mind and soul. I think it depends on the amount of harm caused by actions. There are cases, as evidenced by this board, where secrets are/become destructive forces in the dynamics of a relationship. But your right to privacy doesn't really fit this scenario, does it?
Paths entwine, sometimes, but they do that in the present. The issue is that it's a choice and - since you didn't actually kill or harm anyone - I think the choice should be freely yours.