I completed my 2nd with my girlfriend Friday, about 5pm. I noticed some soreness on my arm around midnight, she did not. By the next morning, about 7am, she felt awful but I just felt slightly more tired than usual. By 11am I was getting more and more fatigued, and when I left work at 5pm I felt like I had not slept at all the previous night. I felt normal Sunday morning but the effects hit hard and fast while they lasted. She had a similar symptoms, but also a slight fever and very bad body aches. This was pfizer