when connecting my iphone 4 on computer to access itunes I am getting my husbands apps and music library? what to do to access mine ?

Make sure you are on your Apple ID and not his. Sign out of his and sign into yours.

How do you normally access your content?

Do you have seperate logins for the computer?

Do you typically hold <SHIFT> when launching iTunes to select an iTunes library?

It is important to be logged into the appropriate iTunes account, but this will have absolutely no affect on what content exists on the computer or displays in the iTunes library.

Find the apple ID and click it, then select "sign out". Then enter your information and check the library. You may need to download all the songs amd media again because it may have been deleted.