Please Help!!!

I started testing back last month April 6 I got my very first vfl then I started testing everyday after that I've been getting faint lines and some were negative I got my cycle late in April but it only lasted 2 days the blood flow was normal. I tested on the beginning of may and still received faint lines today my cycle came 3 days early.. should I keep retesting??  I just want to be sure before I make a doctors appiontment and they tell me the opposite..!!!!