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I've had mild asthma most of my adult life, usually triggered by allergens, but I have noticed it's worse with this pregnancy. I didn't notice an increase in symptoms with my first pregnancy, but we're living in a different part of the country now where dust and mould (my two main triggers) are more prevalent. I've had to use my Ventolin nearly every night due to shortness of breath, tightness in the chest, and wheeziness. Shortness of breath is common with pregnancy, but wheezing is not.

From what I've read, it's a pretty even split between the percentage of people whose asthma improves, worsens, and stays the same during pregnancy, so it might be worth mentioning at your next appt, just so your doctor is aware.

Also, I read somewhere that since your blood volume is increasing, it swells up everything including the little thingies in your lungs that absorb oxygen (can't remember the technical term, but whatever) - thus making it harder to breathe.

I wrote a post on this! I have asthma that got so bad during my pregnancy my OB threatened to hospitalize me. It remained worsened after delivery, and now I have a nebulizer. We recently replaced the carpeting in our house with laminate flooring & its made a huge difference. I also saw an allergist/pulminologist to pinpoint my allergens and to determine a course of treatment.

Good luck! It's scarier when you're pregnant!

My asthma has been okay during pregnancy, but I am a little concerned about labor. I have exercise AND allergy induced asthma (since HS), and when I was diagnosed, the doctor said if I didn't exercise etc, having a baby would be like running a marathon to my lungs. I've danced my whole life, and I am trying to be diligent about walking now, so we'll see!

If it gets worse, I'd talk to your doctor. I'm on an every day med for the asthma, and I have my emergency inhaler.