"I literally received this shot a few days ago and I can already feel a difference. I was on the pill with no problems but had to stop taking it because of the migraines that I get and the possible risk of taking the pill. My chest is very sore, I&#039;m tired, getting random headaches and sort of down(mood). I&#039;m not as talkative, it&#039;s almost like my personality just disappeared overnight. I definitely don&#039;t feel like my usual self. I wanted to see some reviews to see how quickly others were feeling side effects and what they are experiencing. It seems like these symptoms have a possibility of going away...not sure how long I want to wait, even though I still have a minimum of three more months."