It doesn’t work that way in the UK. It’s a crime called unlawful cardinal knowledge - because although you may well have consented, he should be the one to know better as you’re still a child in the eyes of the law and he’s very much an adult.
that said, please don’t be scared to seek the help that you need. You’ll still need a midwife and you’ll get lots of other support too. It’s important that you can share with your parents if you feel safe to do so, or talk to someone close to you that you trust. You certainly aren’t the only one in this situation.