Hey mama, yellow discharge at 37 weeks can be normal, pero honestly better to mention it sa OB mo sa next check-up or call them now para ma-assess nang personal, sometimes it's just increased discharge from hormones, pero gusto nila makita talaga especially pag may unusual smell or itching along with it. A few of us moms experienced different types of discharge towards the end, so hindi ka nag-iisa, but your doctor really needs to see you to be sure all is well with baby. Ingat, and hugs, first pregnancy is scary talaga!