I was on Humira for about 3 mths and then developed PCP Pneumonia and had to stop. I then went onto Corsentyx which made no difference. About 2 and half months ago I restarted Humira. I take it on a Friday afternoon every 2 weeks. I have noticed that on the 2nd and third day after taking it I feel really sick. My chest starts to feel so tight and it feels like I'm struggling to breathe and then on the day after it feels a little better. Is this normal? Has anyone felt like this.