<human>: Hi all, 
I was without a job after graduating graduate school for nine months, but finally got a job in February. Toward the end of the unemployment, I ran into a few medical issues that had to be taken care of sooner rather than later. I was also running out of money. 

In order to pay the last medical bill, I put it on my credit card since I was worried I wouldn't be able to make rent next month, but was in talks with my now boss to negotiate a contract (so I knew it wouldn't be long at all till I'd be able to pay it off, but not soon enough that I wouldn't have to pay another month's rent). The charge was only 250, but my credit card only had a limit of 500 at the time. 

I paid it off as soon as I could, but when I recently went to apply for another credit card, I saw on the results for their check up on me something eluding to the fact that I had a heavy charge on one of my balances. I fear that this affected the rate they gave me. 

So, my question is this: is there any way to check up on this, and to correct it? I mean, I paid it off pretty quickly. I'm scared this will affect my credit in the future. 

(

Can you condense the text into three sentences or less?
<bot>: Had a heavy charge on a credit card; seems to be affecting my credit, not sure how to fix it).