if he finishes first..

When me and my husband have sex, he almost always comes first. If I'm lucky, we will at the same time. 
However, if he does come before me, there's a slim to none chance that he will keep going or help me finish. 
Am I wrong for getting mad over that? Does your man let you finish if he does first? 
Also, IF he does let me keep going (if I'm super close) he always makes these really unpleasant noises and faces to make me automatically get out of the mood. Sometimes I just don't care and ride him until I come anyway. But then it's just awkward.