Is it possible for him to slow things down? If sex is making you unwell, surely that would be pretty important to him??
This isn't the first thread where you've felt like you've needed to put it out there that your hubby is your soul mate, nor is it the first time that you've been in a situation where keeping him happy has come at fairly substantial cost to your health.
We don't have anything like the insight into him and your relationship as you do, so if you say he's your soul mate I'll take your word for it. But there is something really unhealthy about this relationship for you. Relationships aren't meant to make you sick. People that love you aren't supposed to be okay with making you sick.
So what's going on? Is this an issue with identifying your boundaries perhaps, and being able to communicate them to hubby in a healthy way?
With a history of trauma, that would make sense. Someone finally decidea we're loveable and it's like, "Whoa, what the heck is this? How do I handle this healthy relationship?" It's new territory, and it's not stuff that comes naturally if we grew up in relationships that were chaotic and unsafe.
Either way, something doesn't seem right here, and it's not just the sex issue... You know, it's okay to have needs and boundaries and expect your hubby to respect that when you communicate them to him. If he loves you, if he's soul mate material, it will matter to him that this is distressing you, and being open with him will make your relationship stronger if it's the real deal:)