Yes it can last for several months because you have been on it a while. Everyone is different but it can't be more than 3 months if you want my humble opinion. If it has been more than 3-4 months after going off cold turkey then I would blame the tricyclic or anxiety.
Support group say it can take a month for every year you've been on them, don't
think I could wait that long though!!!
Withdrawal gives symptoms of anxiety.
Wonder wether it could be the tricyclic ??
Also just discovered I should have been weaned off hydrocortisone and haven't been I only take 10 mg's but that could effect things.