TMI Urgent: 14 weeks pregnant, mucus plug?

Hello, hoping someone can help! I'm 14 weeks and 5 days, and got this today. It looks like the ewcm I get when ovulating. I'm absolutely terrified. I got some last week but not as much, phoned midwife about it and she wasn't concerned. I would go straight to hospital if I was sure something was wrong, just don't want to waste there time. Please help if you can, this is following a previous miscarriage. X