confused

I found out I was pregnant the middle of January I have 35 day cycles I have had 2 scans 1 3 weeks ago told could only see yolk sac then had 1 a week ago said there was some slight growth but basically same as week before told to prepare for a miscarriage I have started blessing but no cramps and not heavy won't scan till next week so do you think it's over for me am gutted and frightened that I have these long cycles now that this is the problem and I will have trouble conceiving  or miscarrying o have had 3 pregnancies before which are all here and well but my cycles where 28 days when I had them any one else had anything like this thankyou