Excess saliva

I am about 8-9 dpo. I feel pretty great, but my mouth won't stop watering. Usually my mouth is pretty dry. But now its like an I'm-about-to-throw-up amount, but isn't accompianed by stomach cramps. Also I have a blood or metal taste on my mouth. Could this be a symptom? Anyone else get that with a bfp to follow? Please wish me luck!