One of early trademarks of pregnancy are sensitive, sore breasts. This is caused by an increase in level of hormones. However, this too will pass. Once your rising hormone levels have stabilized and your body adjusts, tenderness will diminish. You should be feeling much better after first trimester.

The monthly visitor has failed to visit.

This actually isn't one of best signals that you may be pregnant. You may have some spotting due to implantation bleeding (although this is uncommon). Most women notice other symptoms before this one comes along. A pregnancy test is usually your best bet.

You suddenly crave apples and pretzels (or any other unusual food for that matter).

Many women claim to crave certain foods during pregnancy. Food aversions are also very common. You may want to take a pregnancy test if your favorite food no longer lingers for your attention.

Whitening Toothpastes Whitening toothpastes generally cost between $2-$10. Several studies have been done on these toothpastes to see if they really can whiten your teeth just while you brush. Studies have shown that you they can help a bit, and also that same results can be achieved with normal toothpastes with a little extra brushing every day. The simple fact is that toothpastes doesn’t sit on your teeth for long enough to actually bleach any discoloring that is present.

Bleaching Trays Bleaching trays are usually obtained through a dentist. What happens is that dentist will take an impression of your teeth, and make a mold. You will then have to wear that mold with bleaching solution in it for a certain amount of time each day. Experts all agree that this is most effective method however price is more than most people are willing to pay. Bleaching trays can cost between $300-$2000. If this is a method you are interesting in I would recommend talking to your dentist for more information.