Advair HFA and antidepressents

I just turned 34 and I am a woman. I have struggled with mild asthma from early teens. I was always able to control my mild asthma with a rescue inhaler as my asthma was triggered primarily by cats/some dogs. However eventually that faded away and I was in control as long as I wasn't around cats. At age 31, I had my daughter (she is now 2 1/2), I rarely had asthma symptoms during my pregnancy and before. However about 1 week after my c-section I had to go to the ER because I couldn't breathe. They thought maybe I was having a pulmonary embolism from the previous c-section surgery. Fortunately I wasn't, but unfortunately for whatever reason, my asthma had been triggered (even if I wasn't around animals). My doctor put me on a Advair, another rescue inhaler, and ZPac. It helped right away.

I noticed a big difference in my ability to breathe. However 2 1/2 years later, I'm still on it. 250/50 once a day. I've tried going off of it several times but I'm unable to breathe. I don't want to be on a steroid long term, but I also have to be able to breathe after about 2 days being off of it. It's like gasping for every breathe. Not fun at all. The side effects I've had are hives to anything cold, itchy skin, stiffer feeling joints, occasional mouth sores, lots of phlegm (coughing up phlegm especially in the morning). I've never suffered from leg cramps or depression from Advair, in fact prior to having a child I was on Lexapro for anxiety and after being put on Advair my depression/anxiety has gone away. In fact, I've lost weight (30 Lbs) and am now down to the same size I was in college! I've asked two different doctors my OBGYN and Family Doctor if it's safe as we are planning for another child. They say yes. My OBGYN has said if I can't breathe I'm not going to be able to carry full-term. Which I guess makes sense. My Family Doctor said you can use Advair only as needed as it is not a bad drug to go off and on again (unlike antidepressants where you should never just stop them cold turkey). He said (he also suffers from asthma) that asthma can be triggered by stress (and my life has been extremely stressful over the last year).

Is there anyone who has had similar side-effects? Do you believe the benefit of Advair outweighs the negatives? I'm wondering if there is a better non-steroid drug that I can take that is SAFER for pregnancy and for my future. Open to suggestions...