Aww, 38+2 pa lang, so possible na yan ang mucus plug! Ang thing is, hindi siya guaranteed sign na mag-labor ka na agad, one of my mum friends lost hers at 31 weeks and didn't deliver until 38+4, so it can really vary. What matters more is kung may regular contractions or kung bumagal ang amniotic fluid; otherwise, it might just mean your cervix is softening na which is good, but labor could still be days away. Definitely check with your doctor para ma-confirm kung ito talaga ang plug and para ma-monitor if may other signs na, better safe than sorry, lalo na ngayon na malapit mo na!