You can read the parable, it is in red letters.
Luke 16:
22 The poor man died and was carried by the angels to Abraham's side.[a] The rich man also died and was buried, 23 and in Hades, being in torment, he lifted up his eyes and saw Abraham far off and Lazarus at his side. 24 And he called out, ‘Father Abraham, have mercy on me, and send Lazarus to dip the end of his finger in water and cool my tongue, for I am in anguish in this flame.’ 25 But Abraham said, ‘Child, remember that you in your lifetime received your good things, and Lazarus in like manner bad things; but now he is comforted here, and you are in anguish. 26 And besides all this, between us and you a great chasm has been fixed, in order that those who would pass from here to you may not be able, and none may cross from there to us.’
The rich man was indeed suffering but Lazarus was not in heaven.
No, because before the crucifixion NO HUMAN BEING was in heaven. When a person died he went to Sheol, the place of the dead and, depending on the person, he would go either to Abraham's bosom (Paradise) or to the flames. Jesus explained that in Luke 16:19-31. When Jesus died, He went to Sheol and took with Him those righteous people straight to heaven, as described in Ephesians 4:8. The unsaved remain in the place of torment, waiting for the White Throne Judgment and the Lake of Fire.