No, it's not like that. 'Middle class' didn't even really exist at the time, in fact the term originated only in the 18th century. Sure you had members of guilds and merchants who might have been a little bit better off, but the during the middle ages you still had an all or nothing society: either you belonged to the nobility or high clergy, or you didn't. Their still was nothing in the middle. No middle class.

I am in blood
Stepp'd in so far, that, should I wade no more,
Returning were as tedious as go o'er.