Could I be pregnant?

Hey guys , I’m new but I’ve been using glow almost all year to keep track of my periods. I’m a little obsessed but I’m young lol but here’s the deal , my periods are very regular like clockwork never had one come more then 1 or 2 days late ... my last period however was on May 25th , haven’t had one since. After I was extremely worried that I was pregnant, I took 2 tests a week apart from my lmp they both came back negative. I noticed though a few days after my lmp I spotted once & nothing else. I was so excited I thought my period was coming but nothing else after that . I should start my period on the 28th of this month but I’m a little nervous it won’t come. I keep reading these stories of girls who were pregnant but didn’t get positive results for months , that’s makes me kind of paranoid? But what do you guys think ? Can you help me shed some light on my situation a