Question for transmasca on Reandron shots

I got my first shot just over 2 weeks ago. All good but after a week I started to get itchy around the injection site. I didn't realise it was the same spot and just thought it was an insect bite at first. Now it's spread into more of a rash and having a look it was where they injected.

I think a tiny bit leaked out when they did it as the band-aid they put on was a bit oily. I had no other signs of being allergic but I'm thinking maybe my sensitive skin just didn't agree with it maybe and had a reaction? But also it shouldn't still be like this 2 weeks later. I'll keep an eye on it and obviously go to the dr if it gets worse.

Just wanting to see if anyone else has experienced something similar, thanks.