So I remembered reading live threads where the OP was bleeding heavily (menstrual) and was enquiring what to do and the general MN collective was "Call an ambulance NOW" and the following day the OP said "Blimey good job you told me to get seen as became a life threaten situation and hospital staff fixed me!"
This week the exact same thing happened to me - I had trusty Mirena removed mid-June then after three weeks of very heavy bright red bleeding on Monday the flow became unmanageable, heavy cramps etc
I saw my GP at 10am as an emergency who prescribed Tranexamic acid to cease the bleeding but by 4pm I was changing super plus tampon and pad EVERY 5 MINS but felt confident that surely the meds would work
When I could no longer manage the flow at all and just sat on the loo like a scene from a horror film passing huge clots as well as blood I remembered MN wisdoms and called 111 to see how much blood I could loose before becoming a worry.
I was already worried but when they said I needed an ambulance ASAP and it arrived within minutes I knew I'd done the right thing.
I was minutes from losing consciousness and almost certainly have ebbed away on my own as kids were staying at their dads.
Thanks to MN I went against my own warped logic of better to keep stiff upper British lip than bother anyone and thankfully this saved my life.
The cause still unknown but gynae and I both think a perfect storm of Mirena magic being removed and wonky perimenopausal hormones not remembering which off switch to flick.
Thanks Mumsnet I don't think I'm BU to suggest precious threads informed me and help to save my skin