Do you have a mortgage, car loan, or something else? May be worth getting a loan you can afford, if even at a bad rate, just to start building credit.
Did you apply for the Amex blue cash everyday card? I use the blue cash preferred, but the everyday is more introductory. 3% back at super markets, 2% on gas, 1% everything else.
Where do you have your investments that you applied? Was it Chase?