Op I've suffered mcs too plus a dx of endo, ovarian torsions and several surgeries...
I was similar when pregnant with dd, didn't want to totally believe it would happen until she reached viability stage and even then I didn't totally relax, that's normal after loss to a point
His response is worrying for a number of reasons
Not taking responsibility for his actions
Setting up a "defence" for someone else being responsible
More crocodile tears
Not sensibly approaching how to communicate with ss
Ss are NOT "child snatchers"
I've had involvement with them as a single mum with serious mental illness and ALSO due to ex making malicious and unfounded reports of neglect/abuse (totally no reason he was just shit stirring - which they immediately realised and explained they have to check - which I understood from their perspective)
Every time they were sensible, supportive and genuinely helpful.
When it was because of my mh they helped with connecting me to local support groups, providing a listening ear to dd and I and when I was very ill and dd was being cared for by a relative made sure I felt ok with that and then supported us when dd came back home.
I'll forever be grateful to them, especially one particular sw who made me laugh (my main dx is ocd) by saying (at a time when my place was chaos! And not at all tidy!) that her home looked like a tornado had been through it compared to mine!
Several times she gave me "permission" to not "do it all" when I was stressed thinking I'd "be in trouble" because the dishes weren't done or whatever. She was lovely