Hiya Hayley
It's my understanding that although it's easy to confuse fertile CM with arousal fluid as it looks and feels very similar.....It does not help conception in the same way. Cervical fluid is unique in its ability to keep sperm alive for up to five days (in fertile quality fluid), protects it from the acidity in the vagina and transports the sperm to the outer third wall of the fallopian tube where fertilization takes place.
The Cm we are looking for should either be:
Creamy, Milky, Lotion Like - FERTILE
Cervical fluid now becomes much more abundant and will feel wet from 2 - 4 days. It can appear either thick and creamy or like hand lotion and will form peaks in your fingertips when pulled apart or can be thinner and look milky. Color of the fluid is white or yellow and the overall vaginal sensation is wet.
OR
Eggwhite Cervical Fluid - VERY FERTILE
Cervical fluid now reaches its most fertile stage for 1 - 5 days. The fluid will look and have the consistency of eggwhites. It is slippery to the touch and if pulled between the fingertips will stretch 1 - 10 inches! The color can be clear or iridescent and the overall sensation is extremely wet.
Hope this helps.
Best of luck!