I went thru a 15 year remissions where I thought everything was fine, of course when Ib was re-daignosed and treated and my wife and I started learning more about Bipolar we realised I had not been in remission at all and I am better now in most ways tghan before.
Now is the time to arm yourself with education about the disease and support networks and learn what triggers you feeling certain ways, and enjoy the new feeling :)
most of us have had remissions from time to time. the main thing you can do is be in close touch with how you're feeling so that the minute anything starts up again you have support measures in place. pdoc number, good books etc.. whatever works for you and enjoy being free of it for as long as it lasts!