Mold exposure in home?

About a month ago I woke up and smelled mold in my house. My husband took the paneling off the wall where we smelled it, sprayed bleach water all over, but we never could actually see the mold. We haven't smelled it since, and he's fixed the leak in the roof. Sometimes I get a little tickle in my nose, but not often, and for about 5-6 weeks now I've had a bit of chest discomfort (which seems to be getting somewhat better), although I did start a workout regimen 8 weeks ago, so I'm not sure if the chest thing is related to my working out or possibly mold. So my question is...since I'm still in the same house every day where we smelled mold, if it were still around and I was exposed to it constantly, would I be very sick? Or since we've not smelled it since would that mean it's gone? We also bought a Hepa air purifier since we read they are supposed to help.