Oo naman, maaaring gumamit ng sunscreen habang buntis! Actually, recommended pa yan especially ngayon na summer season at mas malakas ang UV rays. The key lang is to use pregnancy-safe sunscreen, look for mineral-based ones with zinc oxide or titanium dioxide, hindi yung may sketchy chemicals na hindi mo sure. Better safe than sorry, pero para sa specific recommendations based sa iyong skin type at health history, mas better mag-consult ka ng OB mo para peace of mind lang. Congrats sa 18 weeks!