The dirty little secret of Plan B

If you read the press, the "plan B" for pregnancy prevention is either
A) The greatest invention since sliced bread, or
B) killing babies, oh my...

I'm a bit cynical about the ideological wars over Plan B, which stops ovulation and fertilization, although it can stop a fertilized egg from implanting (only the third scenerio is "abortifactant")...
But from a practical standpoint, the antinatal activists ignore a couple dirty little secrets about taking it:

One: Nausea and vomiting...so how many women who are so careless they can't use contraceptives will take the pills correctly: i.e. bother to go to the pharmacy, take them within two days, and take them on schedule and will continue to take them even though they are throwing their guts out?

Two: If you are already pregnant, you are taking medication that can malform your growing baby. So these women will be "advised" to abort the child. (in rape cases, we check a pregnancy test before we give the pill).

Three: it lowers the pregnancy rate by 75% (NOT 100 percent) when take CORRECTLY...LINK

This study divides three groups of well organized women...one group was given the pills to keep at home to take as needed, one group got it at the clinic, and one group didn't use any plan b...and guess what?

Those doing the study claim that those who keep Plan B pills at home for back up have no more unprotected intercourse than those who are on birth control but don't use it, or those who went to the clinic to get it...but when you get to the actual numbers, it shows that 37.5% of participants reported having unprotected intercourse..... but 54.9% of women who had the pills already in their medicine cabinet admitted that they used Plan B for unprotected intercourse.....

Silly me...I would think that 54 is statistically higher than 37...

ironically, the article also claims No difference in pregnancy rate, or STD rate between those who had Plan B on hand, those who had to go to the clinic for plan B, and those who never used plan B...

What's wrong with this picture?