A gram? The math isn't adding up. I'm just wrapping up my first cycle so I don't have a ton of experience, but I do have some. I ran 300 deca for 12 weeks and 500 test c for 16. Did you experience any bleeding?
I pin my delts. The only time I ever experience any issues is if I get bleeding. I figure I might occasionally hit a blood vessel or something. It's rare, but I know right away if it bleeds I'll probably get a small bruise, maybe a little sore. Out of all the injections I probably experienced this 6 times.
Are you running new gear with a different carrier oil or something? I've only used gso and it seems to work well for me.
I'd not be too worried about a little soreness as long as it looks normal and isn't swollen. If any other symptoms besides soreness appear, that's when I'd get concerned. I mean, you're poking a needle into your flesh - it's bound to get sore from time to time. I use a draw needle and swap to a smaller to inject, one benefit is the needle to inject is SHARP and not dulled from piercing multiple vials.