Does not sound good, to be honest . Do you have much pain? Sorry you are going through this. If you have had prev MCs your local EPAU will probably see you and scan you if you wish without going via your GP.
not definite - have had it go both ways. With ds2 had an enormous loss and the works - yes it turned out (much later) he had been a twin, but hey he stuck there, which was all that matters. Likewise in pg with dd.
Everything crossed for you. Awful situation, but rest and try to stay positive & look after yourself x x