My asthma is kinda uncontrolled. I use my puffer regularly but I do 2hrs cardio mon-fri. I want to become pregnant, will my asthma hurt the baby?

Yes. It sounds like you need to meet with your doc and develop a personal asthma management plan. Such a plan would allow you to increase or decrease daily maintenance meds (inhaled steroid) based on certain symptoms/factors and reduce your puffer use to where it should be=once or twice a week or less. Poor management can place both your babies life and yours at risk.