Any ideas? 🙏🏼

Yesterday, I had brown spotting. Today my DM is clear and stretching. I’m having light cramping but nothing major. I am also extremely fatigued, despite having a very good night sleep.My period is super late, I am on cycle day 45. I’ve taken two pregnancy tests and I could see a faint line (but disappeared) in some and in others it’s like nothing is there. I’m so confused and I don’t have a dr appt until next week so I’m going crazy.