Confused!! Plis help

Camila

Ok so on Sep. 15th I found out I was pregnant it was a Sunday, but on Monday I started spotting brown discharge, the next day on Tuesday I had a pink discharge, but sadly I started bleeding on Wednesday until Yesterday (Saturday).

My period always las between 7 to 14 days. I thought that with a chemical pregnancy I would bleed more days! When can I start trying again?