Asthma Attack during pregnancy

im on 14 weeks na po pero inaatake ako ng hika. actually tinigil ko maintenace ko na Salmeterol kasi worry ko baka may effect kay baby? advice s akin ng midwife nebulize ako ng .9 sodium chloride. Sino po dito may active asthma din po na preggy? or naging d same case? worry ko paano kaya yung maging delivery ko nito? sa 1st and 2nd child kinaya ko normal.. 34 yrs old nrin aq kapag manganak..