Puis-je tomber enceinte après avoir été habillée à sec ?

You should ask doctor prior to stopping Depo injections. The discontinuation of this type of birth control without due notice can result in abnormal bleedings and other side effects. Before making any alterations to your birth control system, it is advisable that you consult a gynecologist.

If your last period was on March 26 and you suspect pregnancy from early May, pregnancy tests might not show accurate results if taken too early. Wait at least a week after a missed period for a more reliable test. Use your first morning urine for better accuracy. 

The reason for the worsening of your periods and insomnia may be the hormonal changes from the surgery or the stress that comes with it. Period insomnia is a common problem that women face. You may also want to learn how to help yourself. Perhaps you could try some relaxation techniques like deep breathing exercises or relaxation baths. If it does not resolve on its own, seek medical advice as the best way to deal with those problems may be to find the one most suitable for you.

As for Mifestad 10, it is not an emergency birth control pill. Emergency contraceptive pills can either contain levonorgestrel or ulipristal acetate. If you have had unprotected sex, it's best to use a recognized emergency contraceptive pill to prevent pregnancy. Remember the greater the time between unprotected intercourse and the taking of emergency contraception, the less effective it is.