I recently moved from the East-coast to the West-coast. During this time, I missed my period. I am now about a month, almost two, late and have taken three at home pregnancy test. They all came out positive. Because I moved, my insurance had to be changed, approved, and all of this has prevented me from seeing a doctor. I have started taking over-the-counter prenatals, but want to know if I can do a walk-in at my new Obgyn? What can I expect at this first visit?

If you can do a walk-in or not depends on their office policy. I doubt they would allow it--most do not. If there is an urgent care clinic nearby you could go there, but most OB/GYNs do not book you for your first appointment until 8-12 weeks into your pregnancy anyway. How long before you are able to make a normal appointment?

Your first appointment can vary slightly depending on the doctor & your insurance, but they will take a urine sample, possibly do an ultrasound and you will get a physical exam, I believe also a breast exam.

It was very wise of you to start taking prenatals :)

I just got the approval yesterday, but they said to give it about two days for the paperwork to go into the system. According to me, I'm about 7 weeks now. So I take it that I should be getting my first appointment soon? As far as my insurance, I have Tricare. I'm sorry I'm so new to this. Lol :) I also heard that a blood test is I guess the most 'positive' way to find out that you are pregnant. Should I just ask for the blood test or go for the urine one? Thank you so much!

At only 7w, most doctors wouldn't have even booked you for your first appointment so you shouldn't have to worry about that.
The urine vs. blood test will also depend on the physician. Some only do urine samples unless you have a history of prior loss or other medical issues. You can certainly request a blood test, but you will have to follow up with another blood test 48 hours later. A physician shouldn't turn down your request, its at your (and your insurance company's) expense. I'm not familiar with Tricare, but plans can vary so be sure to check with them in what and how much they'll pay for. Blood tests aren't typically expensive, but ultrasounds, etc. can be difficult to afford if insurance doesn't pay. *And some will limit ultrasounds to only 2 per pregnancy unless there is a problem.