Aw, first time mommy jitters, totally get it! Clear, odorless discharge is usually normal during pregnancy kasi ang body mo is just doing its thing, pero since you're at 19 weeks, best to mention it sa OB mo sa next check-up lang para peace of mind, sometimes doctors just want to rule out anything, you know? A few of my mum friends had the same worry and their doctors said it was totally fine, so don't stress yourself too much.