Skipping a few Pills in a row. Not putting on the 避孕套 until your guy is close to climax. 该se and other little mistakes can set you up for motherhood: Almost half of all unplanned pregnancies among young, sexually active women are due to using birth control inconsistently or incorrectly, according to the Guttmacher Institute, a reproductive health organization. Here's 如何避免自己在冒险.
A recent study found that women on hormonal contraception, such as the Pill or Ring, reported lower levels of sexual desire and arousal compared with women not using any birth control or those using nonhormonal methods like 避孕套s. One theory why: 该 pill reduces levels of testosterone, a hormone that may stimulate your sex drive. If you're on oral contraceptives and notice your sex drive has nosedived, tell your gyno; she may opt to switch you to a different Pill prescription.
Can't remember to pop a Pill or hate having to interrupt the heat of the moment while your guy puts on a 避孕套? 该n consider the IUD (intrauterine device), which has recently seen a spike in popularity among young women in monogamous relationships who know they don't want kids anytime soon. It provides contraception for 5 years with a superlow failure rate: 1 percent. How the IUD works: Your gyno inserts a T-shaped plastic device into your uterus which prevents fertilization.
Because emergency contraception can have uncomfortable side effects such as nausea and spotting, a lot of women think using it more than once in a while is potentially dangerous. But taking it repeatedly is safe, says Dr. Carolyn Westhoff, Medical Director of the Family Planning Clinic at NewYork-Presbyterian Hospital/Columbia University Medical Center. (该 same goes for ella, but since it's newer on the market, you shouldn't use it more than once within the same cycle because that hasn't been tested in clinical trials, says Dr. David Archer, Professor of Obstetrics and Gynecology at Eastern Virginia Medical School and an expert for Ella's manufacturer, HRA Pharma of Paris.) Still, like the name says, it's meant for emergencies. So if you find yourself relying on it more than once every few months, look into all of your birth control options and talk to your gyno about the best match for you.
Does your average-size guy insist on XL condoms? He's not alone: 45 percent of men in a recent study copped to using a condom that was either too small or too loose, which researches say makes it significantly more likely that the condom will break or slip off during sex. Unfortunately, you can't always tell if his 避孕套 is the wrong size, but it's smart to stop the action if it looks baggy or appears to be so tight, there's no space left at the tip.
"You can conceive any time of the month, even when you're menstruating," says Dr. Westhoff. Here's how: Sperm can live inside you for 5-6 days. If you have unprotected sex at the tail end of your flow and then ovulate early days later, you might end up with a baby on board.
Years ago, when birth control pills packed higher amounts of bloat-inducing hormones, it was normal to gain 5 or 10 pounds soon after going on them. But you don't have to worry about not fitting into your skinny jeans with today's lower-dose pills. "Any weight you gain after starting the Pill is likely weight you would have gained anyway," says Dr. Westhoff. "In fact, women tend to feel less bloated on the pill because their hormone levels become more stable."
Israeli researchers are currently testing a four-times-a-year birth control pill for guys that kills sperm before one reaches an egg. Human trials of the dude pill are due to start next year, and while we're not expecting to see it in drugstores anytime soon, we are damn excited about guys finally pulling their weight when it comes to preventing pregnancy.