Chemical Pregnancy Questions

Has anyone ever had to go through a chemical pregnancy? I haven't been to the doctor yet. Thursday I had two fairly dark positive tests, Friday I had 2 very faint positive tests. Saturday I didn't test, and today I started my period. What were the symptoms you had when this happened? And what should I do? Call the doctor? Try again next month? Is this even a chemical pregnancy? I would love any respectful advice. Rough day for me. Thank you in advance!