Need Some advice/ Answers 🤔

Aight so me and my boyfriend has been trying for a baby for about a year and some change now and we haven’t had any luck. I was supposed to start my period on the 8th but nothing came so on the 15th I had really light pink bleeding and I thought my period came but instead it didn’t getting heavier like an actual period. It remained really light but ended up being brown and I continued to bleed for ten days . At this point I am curious on what is going on. I took three tests two came back negative and the last one came back unreadable. (I’ve also have a few pregnancy symptoms)

Could I be pregnant or am I just over thinking everything?