Help‼️ I EXTREMELY need Advice‼️

I’m 17 my boyfriend and I live in our own 2 bedroom house. He’s also 17. He works with his dads oil field company that’s how we’re able to afford things. He’s parents are still strict on him and I. So I always have had a normal period. It always comes as expected and I’m 2 days late so obviously I’m going to think I’m pregnant because I’m not stressed out or anything so could it possibly be anything else? And kinda tmi but there is like clear water type stuff coming out from down there?! I was raised with three brothers and my dad so I have no idea about down there in that type of way!! Please help!