Hi, I am 22+4 weeks and still have one. It was diagnosed at 11+6 weeks when I woke up soaked in blood in the middle of the night and thought I was miscarrying.
I bled for 5-6 weeks (only the one gush then spotting/bleeding of every colour for another 5 weeks).
But I'm hanging in there still, nearly 11 weeks later and my baby is so far unaffected and kicking me non stop.
I'm not going to lie, it has been a absolute roller coaster and very stressful, but the odds are generally favourable with more successful stories than failures.
The biggest issue I think is that every sch behaves differently (some hemorrhage repeatedly, some just the once, some never, some go away fast , some hang around for ages, some people lose clots some don't), and the doctors are very dismissive and unsympathetic because they don't believe there is anything that they can do to change the outcome.
Therefore, you are very much left on your own to "wait it out", facing and uncertain outcome.
Whilst the consultants will not advocate any particular treatment, I have read hundreds of stories and am a member of an sch support group online where other sufferers have shared research from other countries and tips.
The general consensus of actual sufferers is that resting (in my case bed rest), drinking tons of water to stop the uterus getting irritated by the blood, and progesterone (only some docs will prescribe it to support the pregnancy) do seem to in some cases improve the outcomes. At least it he's us feel more in control (just that we are doing something to help).
I wish you all the best and if you want to join a group to go through it together I am on the Baby and Bump sch group which you can google.