How does asthma affect pregnancy early on?!?

I have asthma, and we're ttc, I had an asthma attack last night and I'm fighting a cold today. I'm usually very very well controlled but until I know anything in afraid to use my inhalers as some can cause birth defects...
But even then I've gone months without needing anything at all, but then I'm suddenly sick?? 
I'm hoping this means I'm pregnant, but has anyone been through this before??