excess saliva ??

hi y’all...the past day or so i’ve had excess saliva. i’m on a combo birth cintrol and i can’t find anywhere on my sheet if it’s a side effect or not. i also drank a coffee and tea today so idk if that’s also why im getting excess saliva..i also have a really bad habit of keeping my mouth open when i’m wearing a mask so idk that’s another issue....any ideas ???