CP is at best tricky.....I think that's why so many women don't bother with it. In itself it's not a reliable fertility sign, because it shifts positions throughout your day. It can start off high in the morning and drop down low in the evenings and also visa versa pending on the woman. If you have had children before, then your cervix will most likely always be slightly open (except when pregnant - but this won't be an early pregnancy sign as the cervix might only truly close later on).
So, I'll tell you how I do it;
- Always check your CP at the same time every day (I do it after or even in the shower at night before bed)
- Use your middle finger to measure (the space between you finger tip and first wee knuckle is considered 'low'; the space after and before the second knuckle is 'middle' and the last top bit is 'high')
- Cervical texture. when you press your finger ever so gently against your cervix it will either feel a) like the tip of your nose = hard ; b) like your chin = medium or c) like your cheek = soft
- Also check for CM, is there a lot of CM around or not really? What is the consistency of it?
Make sure that your hands (especially if you have longish nails) are super clean else you get major infections if there is dirt/bacteria
If you have long nails, be especially careful not to scratch yourself as this can cause infections/bleeding - best to keep your nails as short as possible if you want to check CP
So, this is what I do lol good luck