The taste in my mouth is bad. and sometimes when i spit it comes out yellow. do i have dry socket?

Bad taste: Did you have your tooth removed recently? If not, it is unlikely the bad taste is from dry socket. Spitting something yellowish may be from draining fluid from nose into mouth--to see if this is happening, an ENT doctor can help you. Another reason for yellow spit may be from oral bacteria, which can cause bad taste if not removed frequently). A dentist can examine and help you with this issue.