<prompt> Human: Im 22 years old. Ive always paid off my Wells Fargo credit card well before the due date. I wanted another card that would start accruing rewards so I opened a discover Cashback card. I made about 200 in charges on it within the first month... Paid off my statement balance, and now my FICO score decreased a bunch... What happened?Assistant: Maybe the average age of accounts decreased due the the new account.Human: It could be. I have my Wells Fargo card that Ive had for about 3 years. An Amazon card because I was stupid and wanted the Amazon gift card when I was in college that I no longer use. And in November I opened this discover card. Made purchases and payments, and now on my FICO score I see that for November and December my score has decreased...  <response>: your score goes down when you open up new credit cards. Give it 6 months, you should see it back up as long as you use your cc right. 