I just did it. That was super easy. I didn't feel any pain or burning at all. After the first shot though, when I pulled the needle out, quite a bit of liquid came out. The instructions say to call Humira if more than a few drops of liquid are on the injection site. Only a drop or two was there with the second injection, so maybe I did something wrong the first time? I waited until the yellow indicator light was finished moving and even a little longer to be safe because I counted to 15. I've never been thankful for my belly fat before but today I am. Lol.
That happened to me one time and I called Humira and they sent me another pen (after getting an ok from my doc) because I didn't get the full dose. If there was a lot of liquid you didn't get the whole dose. Do you have another pen you can use until they send you another? Or perhaps you can get another pen from your doc? At least give your doc a call and let him know what happened and see what he says. When I did my loading doses it was 4 pens, but I think they do it in just 2 pens now.
When it happened to me I used one of the other pens I had and waited for Humira to replace the mis-fired pen for my next dose. They took so long I had to get a sample pen from my doc's office so I had it for my next shot. I ended up with an extra pen which gave me some peace of mind in case it ever happened again (it didn't thankfully!)
60 yo female diagnosed w/UC to mid transverse 1/1/13, now UC or Crohn's colitis. Remission on Entyvio 10/2016-12/2017 before losing response. Had response to Humira with loading doses in Nov 2018, but then lost response. Current meds: Remicade 3/15/19, Asacol HD 2 Tabs 3x/day, Capozide 1/day (hypertension). Dexilant.