I agree with Alan, don't go in while they're 15 mins apart.

You might well find that you wake up during the night or early in the morning with it all back on again - our bodies are more sensitive to labour hormones at night and when labour is niggly during the day, often it will pick up that night. Just get some rest while you can. Bloody show is a good sign, means all those contractions are dilating your cervix. I don't think you'll have to wait long. Go to bed