If your boyfriend rubs his penis around your vaginal area and precums on your clit even though you have a tampon in can you become pregnant?
Absolutely. A tampon provides no protection whatsoever. Not from
disease or pregnancy. If your boyfriend is erect then he is
producing pre-ejaculate, even if it is a very small amount that you
don't really see or notice. This always contains sperm as well as
any germs he may have. Condoms are 99% effective against pregnancy,
WHEN USED AS DIRECTED. If you read the directions you will see that
the condom is supposed to go on when the penis becomes erect. Not
just before intercourse or just before he comes, but as soon as he
has an erection. This keeps all his fluids away from yours. Other
forms of birth control, like the pill, patch, ring, spermicides,
etc, can all help prevent a pregnancy but they do nothing to
protect against germs. There are plenty of things you can catch
from sex and sexual contact that he may never show symptoms of, so
he will never know he has them. HPV (which causes cervical cancer,)
yeast infections (yes, he can grow yeast on his penis,) UTI's
(urinary tract infections, his longer urethra protects him but not
you,) which can turn into kidney infections. He may also not really
show signs of or ignore signs of common STD's like chlamydia, which
is easy to treat (but hard to explain to your parents) but if left
untreated in women can lead to a pelvic infection. If that happens
you may never have children. You body is the only one you are going
to get and you have to make it last a long time. Be nice to it.
Hope this helps!