Too good to be true?

I got my first BFP on Monday night. I took a pregancy test around 6:30pm and sure enough the line showed up right away (although not dark). I could barely contain my excitement and took another test this morning at 5:00am and the line was much darker! I am currently on cycle day 37 so apparently 5 weeks (although I'm pretty sure I obvulated on April 20th). I think my due date will be February 1st. I'm so exited but still in shocked. This was our first month trying and I didn't think it would happen this fast!