<prompt> Human: Hi All, Thanks to you wonderful ladies and gentlemen, over the past 4 months I have been diligently attacking my credit to repair the damage. When I first started with Credit Karma, my score was approximately 550. Over the first two months, I gradually got it up to 613. Then I finished paying off the last account and both Transunion and Equifax showed me at 666. Screenshots of CK account: Now this month, my score dropped to 594. The only thing I did last month was apply and get approved for an AMEX Blue card. This is the 2nd card I applied and been approved for in the past 3 months. But the AMEX card isnt even showing up in my score details! I was trying to get a few more credit accounts open to help boost my score. Both cards have a zero balance. Only used for a few small transactions and paid off immediately within a week. Also, from my understanding, I dont think one inquiry would drop my score 70 points? Any idea what happened or what I can do?Assistant: Your average age of accounts has decreased.AMEX takes awhile to report.Human: Gotcha - another question if you have a moment. My plan was to apply for 1-2 more credit cards over the next quarter to try and get to 5 credit accounts. All no annual fee cards, never carry a balance. Do you think that is a good plan or should I only do one new card every 6 months or so?  <response>: Personally I think you should keep these two only, at least for a year. Youre just fixing things, dont give yourself an opportunity to mess it up. 