Allergic reaction after laser treatment: I have had 3 sessions on a black and red tattoo. Am I allergic to tattoo ink now?

1st session was fine only worked the black ink The 2nd and 3rd I did the red ink.1 week after my 2nd and 3rd treatment I broke out in hives all over my body, had swelling of my eyes and lips. I went to the ER-never had breathing problems and put on steroids, for 2+ weeks. I am now too scared to continue with treatment. Prior to laser treatment I had never had an allergic reaction to any of my tattoos during or after placement. Why is this happening?