Still feeling guilty

Everything seemed to be going smoothly I progressed well but was in so much by 7cm pain so while they were getting the epidural ready they gave me a painkiller which I wish I wouldn't have had and then I got the epidural 10 minutes later. Everything was ok after that and I was offered pitocin to speed things up. After that I had a fever and was throwing up when I got to 10 centimeters and getting ready to have him. My son was born blue and barely crying obviously in distress and his one minute apgar was a 6 :( 

After 5 minutes his apgar was fine and he latched fine to feed. But I still feel guilty about it and how he came into the world. I feel like it was my fault and if I didn't have drugs then he would've been ok. I worry about if this could affect him later on in life. And just wish I could redo it.