EC in no way stops or protects against the transmission of sexually transmitted diseases. It is not a “magic pill” that makes the consequences of sexual activity go away – and those consequences often include STDs that will be with you for life.
"Does emergency contraception have side effects?Some women feel sick and throw up after taking ECPs. Headache, dizziness, lower stomach cramps, irregular bleeding, breast tenderness, and fatigue also can occur. Progestin-only ECPs cause fewer side effects than combined pills that also contain estrogen. The over-the-counter drug Dramamine 2 can reduce the risk of feeling sick and throwing up. Take two of these pills 30 minutes before taking ECPs. If you throw up after taking ECPs, call your doctor or pharmacist.
IUD placement has risks of pelvic infection or harming the uterus. But these risks are quite rare. If the IUD is left in place to be used as birth control, it can cause side effects such as cramps and heavy bleeding during your period."
This is from a pro-women website providing accurate information who isn't afraid of spreading facts. But these kind of things happen with the pill, too. You're just pissed whenever a woman isn't pregnant.
This is solely to scare women from having sex or else later on they'll be infertile. Can you try not using emotional blackmail?