Welcome to the site.
I am Dr. Kaushik and I believe I can help you with your problem.
Well you see your doctor had added Prozac on top of already in use Cymbalta which is not the right way to go about dealing with resistance/ increased tolerance that your body has developed against Cymbalta after years of use thereby making it ineffective to control your symptoms as it used to do earlier.
In fact the combination of Cymbalta ( Snri class anti depressant) and Prozac ( Ssri class anti depressant )can prove to be dangerous as it may precipitate a serious side effect called as Serotonin syndrome occurring due to excess of serotonin levels in the body. However the incessant crying that you are having may not be related to serotonin syndrome but anyways this combination is not recommended.
So this combination that you are taking needs to be replaced by a single potent anti depressant like Lexapro at dose of 10-20 mg / day to be taken in the morning as single dose or Zoloft ( sertraline ) at dose of 50-150 mg / day to be taken as a single dose at night time, however Lexapro is better due to it's faster onset of action, so you shall replace the present combination with Lexapro but you got to first come off Cymbalta and Prozac albeit gradually by tapering their doses so as to avoid development of distressing withdrawal symptoms which may only worsen your present condition.
So to summarize--
-- You first need to wean yourself off Cymbalta and Prozac in the below mentioned pattern.
--First reduce to 40 mg of Cymbalta and maintain on it for 1 week and at the same time start taking 20 mg Prozac on alternate days for 1 week.
-- After 1 week further come down to 20 mg of Cymbalta and maintain on it for 1 week and at the same time stop Prozac completely.
-- After 1 week start taking Cymbalta 20 mg on every alternate day for another 1 week while at the same time you can now start on 10 mg Lexapro .
-- After 1 week you shall stop Cymbalta while continuing on Lexapro 10 mg for another 1 week.
-- After 1 week you may up the dose of Lexapro to 20 mg / day and maintain on it.
So in a total of 3 weeks you shall be able to come off Cymbalta safely and come off Prozac in 1 week and in the midst of this weaning you shall also be able to start on Lexapro which shall become your mainstay of treatment.
Now as far as use of anti histaminic drug is concerned for sleep purpose at night , I reckon you may only take it on PRN basis that is and when required basis at time you are not able to sleep. Instead a more regular option for night time intake for purpose of insomnia shall be either Xanax (alprazolam) OR Ativan ( lorazepam) at dose of 0.5 - 1 mg preferably on PRN basis that is as and when required basis.
I hope this answers your queries and clears your doubts.
Wish you all the best.
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