That depends. *ALL* newbies to training will experience lingering soreness because your body isn't used to the work. Men who are new to lifting often start out with WAY too much weight as a pseudo ego boost. Then they injure themselves with their crappy form.

If it's just a question of being new to lifting, then lift through the sorness - it will actually make the soreness go away.

If you're used too much weight, then you need to rest, and then lift again.

Of course, since it's just your pecs I'd do some VERY light reps for chest, then work the rest of your body and leave the chest alone.