Sayang, since you're having numbness in your legs now plus the existing L5-S1 issue, please go see your doctor or go to hospital jangan tunda-tunda lagi ya, this needs proper checking sebab you're pregnant and the numbness is a bit concerning. I know it's stressful, but better safe than sorry! A few of my mum friends dengan back issues during pregnancy kena refer to physiotherapist yang specialise in pregnancy, maybe that's an option your doctor can suggest instead of acupuncture. Jangan stress yourself lagi, focus on getting proper care first