Help pls

We aren’t married, I’m 20 and he’s 21. He’s got a great job, works 7 days a week and we are about to move in together. I’m currently living with my parents. We’ve been talking about getting engaged, and married soon. But then we got a positive and just knew God had a plan and did it for a reason. We are just concerned about how our parents will react and what they will say.

How would you tell them? A cute way of just out right? Would you do it together I just really need some advice because we are so stressed out and thinking about everything.

I’m about 4 weeks and 3 days. Just confused and scared at this point