Hi welcome to Health care magic forum. It appears that you have an upcoming infection, with little fluid in the middle ear. As it is a bad ear, you should be caustious, when ever you have an commen cold
, if you have them, ear immediately catches infection, and start draining, and paining,
You immediately consult an E.N.T.surgeon for confermation and get the mild infection treated completely to avoid discharge and pain of C.S.O.M. Here after whenever you get cold attack you should immediately get it treated.
I advise you to follow some diet recommendations as avoid taking fruits, juices, ice cream, ice water till you get relief of cold whenever you get cold, till you get relief.
Wishing for a quick recovery and thanks for calling.