Still haven't confirmed it...

Hey ladies! So, last monday I got a very faint positive on 2 tests, decided to go to the Dr to have it confirmed. They ran the tests, and also had to do it twice, because both were too faint to actually say positive. I was 4 days late at that point, which was weird. I took another test Wed and Thursday which were very much positive. Well, I still haven't went to the Dr to confirm it and start Dr appointments and it's driving me crazy! My SO says he doesn't understand why it matters, but i want to see a Dr and find out the due date. Plus we don't tell anyone until we have our first ultrasound. (This is baby #4 and a very big surprise for us.)