Still so confused :(

Chantelle
Ive taken 5 tests now , 3 positive 2 negative .. I no that i thought the negative one the first time was dodgy , but can someone give me an idea of whats going on .. Is it because my hormones arnt high enough when im taking the other ones or? I rang to book the ultrasound but they wont do it till i tell them im 6 weeks :/ I dont no what to do