Morning sleepless - I'm working from home today and replying to you is way more important than any stupid work 
OK, so firstly I'd suggest that sadly in any profession, there are going to be idiots and morons who have no clue as to what they're talking about. I've had it with Drs, which is why I struggle to actually respect their opinion and I'm also worried about what they're going to say.
However.... In the last year, I have had FAR more positive experiences with Medical Professionals than negative ones, so looking at it from a purely logical perspective - Chances are, the negative experiences aren't going to happen as often as I think they are (and so far, this is proven to be very true!).
In your case, you had the Home visit Team talk rubbish to you - this has been refuted by medical experts since then. This is SUCH rubbish, that you received a call from the Director of Mental Health Services, apologising to you. This is a Senior professional person, making time of of their schedule to call you and personally apologise as the things the idiots were saying to you were unholy untrue and completely WRONG. A full investigation? Yet more evidence that what happen to you was wrong.. and that they want to take steps to make sure it doesn't happen again.
The fact you're doing much better overall is great - OK, so you're feeling low today.. that's totally normal, noone can be OK all the time
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I've not been sleeping well either, and honestly, the difference it makes to my mood is just crazy - I slept so well on Friday night and on Saturday I felt like a different person. Then on Sunday night, I slept really badly and felt worse on Monday.... Are you going to try and get an early night tonight? Bath, warm milk, whatever works for you? Maybe eat some really healthy stuff for dinner, chill out.. and just get some control back?
In answer to your questions, all your answers sound spot on - However I imagine you'd like some affirmation to that?
- If not harmed baby why so much out there about risks of stress in pregnancy? Answer: partly because could lead to risky behaviours which I haven't done and partly women who are even more stressed were in the studies I'd read according to a doctor so just not relevant.
- Totally agree, plus stress is a normal human reaction anyway. You've had a lot of people who have studied and practised medicine for years, giving you their opinion that you're absolutely fine. You say yourself, you've not done any risky behaviours, that's because you're awesome!
- What if doctors think less stressed than am? Answer - you've been honest about everything and they are trained to assess people. You have to trust this.
- Precisely, you've been honest. You've not lied, you've told them everything you're thinking and feeling and they've made an assessment based on your answers.
- What if something does go wrong and suddenly everyone changes their mind like family and friends and thinks I am to blame and been irresponsible in carrying on with pregnancy when clearly not up to it? Answer - you can't control this and all the sane people now seem to think no evidence of harm.
- You are up to it, you've been up to it for weeks and weeks and despite struggling, you've come through so much already. The scariest part is, you don't know what the outcome will be (even though it's 99.9999999999% that things will be FINE!) and that's terrifying - I totally get that.
However, you are not to blame and you never will be. Your friends and your family love you and will support you no matter what. If they don't, then they're not worth your time. You have asked for help when you felt low - that's very responsible. Everything you have done, is because you are responsible.
Keep going, you're getting there and in a few weeks you'll no doubt look back and be like 'Urgh, I was so worried, but everything came out fine in the end' 