OMG I found out I'm pregnant today by total accident!

So I'm super excited and yet still a little confused. I was doing some cleaning around the house when I found small wristlet in my drawer, and when I looked inside I had two unused pregnancy test. I noticed that one of them was expired so I pulled It out to toss it away and right before that I was thinking: " I'll just take the test since I'm gonna toss it anyway, it might as well be used". So I take the test lay it down and went to go play with my son, who's 5 and help him with his playdom. I come back a couple minutes later and there's it it! A positive! It said "pregnant" I immediately freaked out and told myself that the test was invalid because it was expired. So I rushed out and bought 2 test. When I got back I took both and... there it was both positive pregnancy test. I started crying at this point. I just couldn't believe it! I had miscarried last year and now.. my rainbow baby.