Odd reaction Ipa/CJC

So I've been taking IPA/CJC for about 8 weeks now. I would always get itching at the injection site that would last for approximately 30 minutes after the injection. I know it's not the bacwater because I use the same bacwater (hospira) for my reta. I've been alternating injection sites on either side of my belly button for my reta, IPA and trt. Over the last two weeks my wife and I have noticed that both of those areas looked a little swollen or puffy. So the last two weeks I've been injecting my reta and trt in my thigh and not getting any itching. The last two nights I injected my IPA into my thigh as well. The very odd thing is while my thigh did not itch from the injection the two areas on either side of my belly button both started itching, and you could feel little welts in both areas. This went away after about 30 to 40 minutes. Just wondering if anybody else has experienced anything similar with these or any other peptides.