Congratulations sa pregnancy mo! Honestly, ang discharge changes during pregnancy ay sobrang normal, maraming colors and consistency shifts talaga, lalo na sa first trimester, pero yung combination na white turning brownish, kahit konti lang, is something worth mentioning to your OB-GYN just to be safe, especially since madalas ka pang nagpalit. A few of my mum friends experienced similar stuff and it turned out to be nothing, pero better peace of mind talaga kaysa mag-worry, diba? Just give your doctor a quick call or text, walang hassle, at they can probably confirm everything is A-OK sa next check-up mo.