Uy, I've had a few pregnant mum friends na nag-complain ng ganyan, especially around third trimester kaya hindi ka lang! Ang numbness at tingling sa paa ay usually dahil sa pressure ng baby at hormonal changes na nag-affect ng nerves, pero since you're already 30 weeks, mas better na i-mention mo ito sa OB mo next visit para ma-check if may underlying issue na kailangan addressin. With your second pregnancy pa, sometimes ang symptoms ay mas pronounced kasi ang body mo ay iba na compared sa first time. Sana mawala agad, but don't wait long ha, let your doctor know!