Wa'alaikumassalam! Difficult to say for sure from description aje, tapi at 38 weeks tu memang both keputihan normal dan early signs boleh jadi, so honestly best check dengan your doctor or midwife cepat, they can do a quick swab or check to confirm. My first pregnancy pun I thought everything was a sign, haha, tapi turned out mostly just the normal increase before labour; my second time lagi confusing sebab every pregnancy is different. Jangan worry too much, but jangan delay check either, better safe than sorry at this stage, especially since you're close to due date na.