Hi i am 28 yr old, i am going with infertility treatment , i took letroz 5 days,, and on 11th day i took Decapeptyle injection as my Doctor suggest me,, today when i took decapeptyle injection i noticed red hives after few minutes redness gone and now its of skin colour . Is it Side effoct of injection? if yes then this injection will work ? or it has been waste due to side effect?