Yes ok.

My moggie got a lump on his neck after his kitten shots. He got a big bald patch and a big scab. He now has a skin allergy so I guess it was no surprise really. But back then it was quite worrying.

yeah my ocicat had a reaction to the drugs they used to spay her and her lymph node swelled up on the back of her thigh! it went down eventually. The only reason i noticed it was because my other cat at the time had been battling allergies and her nodes were all swollen and it was how we knew she was ill from them. ended up taking her to a dermo specialist and she now has monthly/weekly injections for immunotherapy.

Roxy had her vaccination in a thight and i am 95% sure its the same leg where the lumps is. she was moving a lot so vet had to stab her second time to finish all vaccination. i guess that caused more problems. her lump is not red and she is not bothered about it at all, unless i touch it.
i decided to take her in on 15th of October, no point to stress her out
thank you very much for your replies. this forum is so useful i learnt a lot! thanks again.
oh i meant to mention i am in UK, beautiful Oxfordshire though i understand why you wondered, i am not british so my grammar and spelling are not perfect. sorry peeps as long as you can understand my questions and i can understand your advices i gues we are doing fine