So scared to be pregnant again...

I experienced my third miscarriage this past October and I’m petrified it’s about to happen again... today I’m a week late for my period and I’m usually pretty regular I’ve noticed and increase in hunger not much but definitely more than normal for me I’ve woke up 3 days in a row now with severe nausea and not really throwing up this a TMI but gagging up clear mucus really bad. I’ve also been getting RUSHES of white runny discharge throughout the day and that’s been going on for about a week. I haven’t noticed any changes in my breast yet and last time that was a big first sign for me but I want to be pregnant so bad I physically ache to feel my child growing in my belly and to have my family but after going through it so many times I can’t help but to be scared 🥺 last time I went to the OB for my miscarriage he said I have to go to a fertility specialist to find out why I keep miscarrying but it’s SOOOO expensive and so far out of reach for me to be able to go any time soon 😔 I feel pregnant again but I could just me scaring myself what do you ladies think? Sorry for the rant I have no one to vent to 🥺