Hai! Honestly, I think this is something betul-betul kena tanya your OB/GYN sebab depends on severity of your asthma and how it's controlled during pregnancy, a few of my mum friends dengan asthma managed normal delivery, but some had to do c-section based on their doctor's advice. Better to discuss with your doctor early so they can monitor you properly and plan accordingly, especially since breathing is important during labour kan.