I had my 12 week scan, and was told the baby had no heartbeat and was sized 7 weeks. This was 10 days ago now, and the bleeding stopped 5 days ago. I've done a few pregnancy tests, and have all come back positive. Does it usually take long for them to come back as negative after a miscarriage? My partner and I have been having sex sine the bleeding stopped, we were originally told this was totally fine (we're both mentally ok with this), but I'm not sure if I should be worrying about the tests being positive or whether to stop all intercourse until a negative one comes back?