coughing up thick saliva and acid reflux?

I’m 11 weeks. I haven’t had any horrible symptoms. no morning sickness. but the past few days I have had the WORST acid reflux. I take antacids and it comes back within 15 minutes. and also the worst thick saliva in the back of my throat, I’m constantly choking on it and coughing it up. when I quit smoking a few months ago, it was like this. it’s honestly the worst symptom I’ve had and I’m wondering if anyone has any advice on how to deal with the acid reflux and especially the thick saliva. thank u