[timothy trotter]

if you have a higher constitution, your hp would be higher that they are now. If you are new to the bg series, and dungenos and dragons rules, you may be unfamiliar whith what each stat does for your charicter.
for a cleric:
Strength:
This will determine how good you are in melee combat. It determines how often you hit something (the stronger you are, the larger the chance you will hit the creature) and how much damage you inflict (stronger the better) and also how much weight you can carry in your backpack.
Dexterity:
This will add a modifier to your armour class. again the higher the better. a dex score of:
10-11 gives no bonus to your armour class (AC).
12-13 +1 to your AC
14-15 +2 to your AC
16-17 +3 to your AC
18-19 +4 to your AC
Dexterity also determines how good a shot you are with ranged weapons. Slings in your case.
Constitution:
This is how hardy you are. You will get more hit points per level up if you have a high constitution. the above dexterity table is similar to the one used when determinig how many extra HP you get per level. in stead of a bonus to your AC, the bonus is to your HP per level up. Constitution is also helpfull, as it gives yo ua better chance of saving against spells cast on you.
Wisdom:
This is important to you, as you are a priest. in your case a cleric. This will determine how many spells you can cast per day, per level. So this should be quite high if you want an effective cleric
Inteligence:
This is mainly for mages, as it effects how many mage spells you get per level.
Charisma:
This is how personally persuasive you are. you may be charming and nice, and it can help you talk your way out of tricky situations. It may also effect how potent your turn undead feat is. although i may be wrong about that.

hope this helped somewhat, you may find that your point distrobution was wrong when you generated your charicter, or it may help clarify things for you. Hopefully i am right, but some of the things i have said may be wrong, if i a, no doubt somebody will correct me as i am a bit of a novice in comparison to some of the veterans on the board.