Hey mama! Honestly, this is super individual, a few of us mums talked about it din, and some had lots of discharge while others didn't, even early on, kaya walang standard talaga. The thing is, dryness during pregnancy can happen but it's also one of those things na mas better to confirm with your OB since hormones are all over the place at 4-5 weeks pa lang, and they'll want to make sure everything's progressing okay. Don't stress too much about it though, your doctor will give you the real answer based on your situation. Sending you love, sis!