Sayang, keputihan kuning especially waktu pregnant memang boleh jadi normal, tapi since you're on antibiotics, best you follow up dengan doctor dalam 2-3 hari kalau tak improve, okay? Don't wait too long, better safe than sorry when you're 6 weeks along. A few of my mum friends had the same thing and it cleared once they finished their course, but yours kena monitor closely lah. Minum air banyak-banyak and jaga kebersihan, but if it smells off or you have any spotting, go back to clinic or A&E straight away, yeah? Semoga cepat okay!