"i&#039;m a person that constantly forgets to take her birth control pill. so i thought all of the side effects would be cancelled out by not having to remember to take them. i was wrong. within the first month, i had literally no sex drive. within the second month, i became insane. the mood changes had me crying daily and arguing with everyone around me. i also started a light period that lasted for the next two months off and on. the worst part about it was that when i decided to not get the shot again, the side effects last for at least another 6 months or more. plus i ended up gaining (within the three month period) about 30 pounds. worse decision i ever made. my gyno tried to warn me about it, but i didn&#039;t listen. seriously consider the pros and cons of this."