Hypnobirthing/natural pain releif

Anyone know much on hypnobirthing? Or calm birthing? Or any other natural pain releif techniques for labour and birth? Really want to learn techniques on how to stay calm during labour, enbrace the pain, meditate, be relaxed, all those kinds of things. Any input is greatly appreciated!

Due in 4 weeks and my anxiety is getting the better of me! So scared of the pain starting to freak out! I don't want to be scared of birth I want to be excited to I remember that pain like it was yesterday!