CLEARBLUE DIGI HELP!

hi, I've had 3mc in the past, been to recurrent mc clinic and they've taken my bloods and done a scan and told me everything was fine with me, but previous times I've been pregnant I've never had more than 2-3weeks on a clearblue digi and symptoms have always stopped, I'm now 6weeks today and got my first ever 3+ and been feeling really sick and other strong symptoms so I wonder if anyone's ever miscarried after having 3+? As at the moment that's my only reassurance as I've never got this far and never felt this awful due to symptoms, my doctor didn't refer me to an early scan either even knowing the whole history :(