Sad days symptoms and conditions

My son is 3 1/2 and began taking singular when he was 2 for management of a constant cough related to asthma. We witness mood changes in him thought out the day. He will say, "mom I'm just having a sad day," and cry for no reason at one moment and then twenty minutes later be laughing with his sister. "Sad" days seem to happen more frequently since being on singular and the change back is quick. I am at a loss whether to attribute this to his medication or to typical three year old behavior. I plan to take him off the medication for a trial period to see what affect it has on his mood.

I am weaning off Zoloft. I began taking it in Nov. 2001 because I knew I would have post-partum depression since I had it with my first two. Zoloft changed my life so much for the better. That was almost 6 years ago. The past year I have decided that I can do w/o Zoloft. One, because I’ve learned how to choose to be happy. Two, because I don’t like being addicted to a pill. I know I’m addicted (or somewhat addicted to) because if I forgot to take the pill, several hours later, I would get weird feelings, like when I turn my head and move my eyes at the same time, a weird slightly dizzy feeling.
Here’s how I did it. In May and June, I took a whole pill (50 mg) every other day and every other day I took half a pill. That’s 2 months of that. Then, July and August, I took a half a pill EVERY day. Now that it’s Sept., I’m taking a half a pill every other day and NO pill every other day. I must say, this has been the hardest. It’s just 4 days into Sept. and I’m having those weird sensations a lot. My toes and fingers are tingly, too. I was planning on doing this for 2 months but I'm on the 4th day (2nd day of no pill) and I'm having too many tingles and weird dizzy sensations. So, I guess I'll continue taking a half pill every day and take NO pill ONE day a week for this month of Sept. Then, in October, I will take NO pill TWO days a week (but not 2 days in a row). Then, in November, I'll go to THREE days a week of no pill (but not 3 days in a row). And so on. I had hoped to be off by Christmas or Jan. 2008, but I see that it won't work unless I wean to a NO pill gradually. I knew all along that it would have to be gradual, and that's what I've been doing, but I had no idea that just missing a mere 25 mg. for 2 days (but not in a row, mind you) would make such a difference.
Now, if I get too many really sad days, I will consider going back on. But I’ve done really well so far. I know that God is helping me. He can lick it; I can’t. I have had just a handful of occasions where I was told something slightly disturbing or something happened to me that was slightly upsetting and it got me down, but only for the rest of that day. AND, I gave it to God and let Him deal with it. He wants to take care of my problems; He doesn’t want me worrying about it. I know that medicine like Zoloft may be the answer and if that is what I ultimately do, then I’ll just continue leave it to Him. I hope this helps someone.