I have been in your position, to the exact dates, but with no bleeding. I desperately hoped that baby was a slow grower and my dates were wrong. I had an early reassurance scan that placed me about 3 weeks behind my dates- but there was a faint heartbeat. I returned in two weeks time for a rescan but baby’s growth peaked at 6+3 when I should have been about 10 weeks. The heartbeat had stopped at the rescan too.
I was referred to the EPU who had me in the following Monday. I had to be scanned again to confirm there was no cardiac activity. I didn’t want to wait for surgical removal as that would have required waiting for a few more days- so I took the Misoprostol at home which expelled baby and the rest of the pregnancy tissue. This was like a very, very severe period with contraction style cramps. Baby was so small that I wasn’t able to save anything. I would only go down this route if you have lots of support at home- I have a non-squeamish OH who sat with me on the toilet and changed my sanitary towels for me, and gave me lots of cuddles and looked after me. I wouldn’t do the Misoprostol (medical management) if I had a hapless partner at home or children that I had to look after. There is the option to do nothing, as your body will expel pregnancy tissue naturally- but I didn’t want to wait for this.
After you have your treatment, whatever you do- you’ll have to take a pregnancy test in 3 weeks. If it is still positive- you’ll need to be rescanned to see if there is more tissue left to come out. This happened to me, but I used acupuncture to expel it naturally.
Hopefully there will be a happy ending- as I fell pregnant 3 cycles after with my little girl who is due in 10 weeks time. Please have faith that you will get through this. 
A month out on dates is a lot, so I would prepare yourself for the worst and if you do get a happy ending - that’s marvellous.
I apologise for my bluntness and hate to be the bearer of horrible news but I was you, desperately hoping for positive stories- it made my crash down to earth twenty times harder.