Advice?

So like a week ago my period was 6 days late. I took two at home pregnancy test and they were both negative. I know that some people don’t show up on at home pregnancy test, so I made an appointment at a doctors office/clinic. They gave me a pee test that somehow was positive, but when they did a blood test it was negative. They re-did my blood test and again it was negative. Although I don’t want a child right now, I’m an extremely paranoid person. I wanted to still have an ob appointment to have a pelvic exam to make sure I’m not pregnant and to get on birth control. Well, my appointment wouldn’t be for like 3 more weeks and that’s not soon enough for my sanity. So I guess what I’m really wanting advice on is if I should go get a blood test done somewhere else just to make sure and have a second opinion sense somehow I had a positive pee test and negative blood test which shouldn’t be possible or should I just trust the two negative blood test since they’re supposed to be 99% effective?