Is it teething?

Tavleen

My boy is almost 6 months(will be 6m on 20th) and today he is sleepless, having diarrhoea(pooped twice and it was like a newborn poop) chewing everything close to him, fussy n cranky, drooling since last two weeks, and last but not the least his appetite has gone way down today.

Any suggestions? Anyone going through the same? Its making me real tired..!