I’m 19 years of age after being on the implant

Patient: I’m 19 years of age after being on the implant for three years i decided to take it out as me and my fiancé are trying for a baby. I had my implant taken out on the 6th of Febuary and had a period on the 13th of Febuary till the 20th of Febuary. I took a clear blue pregnancy test on the 13th of March as that’s when my next period was due and it came up not pregnant. I’m confused and stressed out

Doctor: