Does drinking alcohol after taking the morning after pill alter its effectiveness? is skipping 2 periods on the pill ok?

Pregnancy test: Drinking alcohol before, or after the pill, or at time is a bad idea. Alcohol is a poison and it never did any body any good ever, so stay away from it. Morning after pill does alter hormone balance may cause to miss two periods. However, do a pregnancy test. If the result is negative repeat the test 4-5 days later unless you get a period by then. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex if you have sex. Get HPV vaccine.