Coughing up lil balls of clear mucus and sticky strings of mucus. Us to always burp but now since nov 2014 ive been coughing up mucus?

Possible asthma. There is not enough information to reasonably answer your question. However, stringy mucous and or little balls of mucus are sometimes seen with asthma- Sometimes asthma can present itself as an intractable or episodic cough. If this is persistent see you healthcare provider for a clear answer.