When should I test?

Pl

Soooo, I went to my doctor a couple weeks ago because I’m on the pill and my periods have always been super light with minimal cramping and this last couple periods have been KILLER, like super heavy bleeding and cramping. She did an ultrasound and found a small cyst but she said it could be associated with early pregnancy. I took a test and it was negative. She said it was still too early to test and if my period is late to take another test. Well, my last period came like two weeks early, so before my last week of pills. I’m not sure when I should test. I’ve been experiencing some pregnancy symptoms too so I’m just all sorts of confused.