worried that I'm losing cervical mucus and will go into preterm labour

Jade
I'm 18 weeks and 4 days pregnant and worried that I've been losing cervical mucus and going to go into earlier labour. I've noticed sticky white, sometimes a snot like green discharge throughout my pregnancy. It's not everytime i wipe just sometimes. I'm worried that this is not discharge like I thought but cervical mucus. Anyone else had this type of discharge in their pregnancy?