Vicky I don't know if you're still there l, I can see your posts are few days ago, but wanted to say my experience sounds v similar to yours...
I found out I was pregnant 10 days ago which put me at 4 weeks too. We'd also been ttc our 2nd for 6 months so I was so happy. I tested several times in the next few days, passed the date period due, and tested again just in case, all positive, and I felt pregnant, just like last time.
Then towards the end of the week a tiny bit of spotting, which I hoped was 'normal' and nothing to worry about. But inside I was panicking. Similar experiences of speaking to midwife/EPU and them being quite dismissive, can't scan, too early, wait it out. Although I suppose they couldn't do anything more for me at that point.
Fast fwd to yesterday and bleeding heavily, terrible cramps, and by the time the EPU tested me, my hormone levels so low as to be negative so I was no longer pregnant. I couldn't understand how they could be so low so quickly so must've been declining rapidly over days...
One nurse in particular who'd taken all my details and knew we'd been trying for ages, tracking ovulation, tested positive several times and was certain of my dates was great and very sympathetic .... but the other, who gave me the test results, said "its negative, is that what you were expecting?" (As if I'd sat there sobbing at Epu just to get a free pregnancy test ?!) and when I said "well no it's not, because I've been testing positive since X date and should be 5 weeks pregnant today" she said oh right so you've tested then? And, so are you bleeding then?! Er, yes I am ff sake!!!!! The way she delivered this felt like such a blow to me.
Made me feel as though I'd got it wrong and wasn't really pregnant or fantasised the whole thing. Im 36, I've been tracking my ovulation for 7 months, I know how to read a Pregnancy test (several times) and I don't make a habit of turning up at hospitals for no reason, having a baby is everything to me/to us.
I could go on and on but my feelings are pretty much how you've already described... the anger, sadness obviously, the guilt, horror. Fear for what comes next.
I feel I don't have the right to be this upset after such a short time (and I do understand that experiencing this loss days... weeks or months later down the line would be much, much traumatic, and I'm no thankful that didn't happen.) I feel at this stage it's judged by people as almost the same as a late period. I have heard it wasn't meant to be.... at least you can conceive .... etc etc.
Rant over. If you read this I hope you're (all) ok and getting lots of love and support. If you're still about and wanting to chat/rant/compare notes/whatever .... XX