Disappointed

Worse feeling in the world. I'm so upset right now. When I first got pregnant with my son the only pregnancy test brand I trusted was first response. This week on 7 dpo I got a positive but on 8 and 9 dpo they were all negative. I didn't freak out because I knew it was too early. Today I'm 10 dpo I got another positive well I thought it was a positive. But it was an index line. I did my research because I was worried because the test didn't have any color. I always figured if a second line popped up that' was a positive. I test again tonight and it was very negative. I always thought first response was the best test in the world. I been trying to get pregnant for 6 months now. You can only imagine my excitement when I saw a second line.😰 I will just wait for my missed period ,I'm done testing for now. Sorry I'm just really upset