Anak, yes naman, 29 weeks is totally okay para sa lab tests like urinalysis at OGTT! Yun ang regular check-ups natin during pregnancy, so go ahead with your OB's schedule. A few of us moms did those tests around that time din, walang problema. Just make sure you follow your doctor's instructions (like fasting if needed para sa OGTT), at kung may concerns ka about anything, i-mention mo sa OB mo during the test! You're doing great sa pregnancy monitoring mo.