Saggy boobs - excercise to back?

What kind of excercise can I do to engineer my boobs more firm and lifted. My boyfriend said to swim, and I strongly believe that will work, but until I can grasp a place to swim and start doing it... is there anything that would work for now?
Answers:

Does anybody know what having a big clitris process?

Resistance training helps alot. Coming from a woman near D cups, I can tell you have strong pectorals under your breasts help keep them from flabby.

Resistance training is usually in the form of using a resistaband. It looks like a tacky jump rope made out of rubber and have two handles at the appendage. You hang it up on a door and verbs down and back as if using a shipment machine. Doing reps of 25x5 you can increace the strength in your pectorals. also if your sitting down watching t.v try squeezing your breasts together for a few times. Here's a site that's sell a cream for the sole purpose of your questions: http://www.perfectwoman.com/
I own no idea if it help or not but I did resistance training and chest presses and it helped loads.
Good Luck

Wellbutrin worried?

Not really as breasts are mostly made up of fatty tissue and not muscles.

Is it sheltered to to have sex on The 3rd or 4th morning of menstruation?

Bench presses, or butterflies with dumbells. Both of the previous answers are right: the breasts are made of fatty tissue so in that is no exercise that will make the breasts firmer, but have strong pectoral muscles will help pull them and give you a firm cleavage.