Trust in the process. If you do not, you should follow a program written by someone you do trust. I will not be offended, there are many excellent coaches with proven routines on the internet, all of whom are more experienced and qualified than me to handle programming.
That said, if you look back over your log, you will see that your weights do not simply increase week on week. If you have struggled with a weight, the weight has remained the same for the next session. Every time we have done that, you have added several reps to your top set PR. You will also notice that when you have been asked to push quite hard on some things, on assistance for that workout I have simply given you a target number of reps to allow you how best to modulate intensity, or a single all out set, or given you easier conditioning.
You are not being asked to make progress beyond the rate at which you are proving yourself capable of making that progress. Again, your idea of injury is likely the result of a lack of competitive sports, and a failure to understand the signals your body is sending you. Soreness, stiffness, musculature pain is perfectly normal. Acute pain or joint pain is not normal. Only you can decide which you have.
Beyond all of this, if you are worried, eat more and sleep more. That's not trite internet 'get swole brah' advice, it's genuine recovery advice. The more you are able to eat and sleep (add another glass of milk, or a protein shake), the quicker you will recover and adjust to the volume of training. I don't know you outside of the internet, but if you've never played competitive sport, and have always lifted like you did previously, then you are bound to have a steep learning curve with your body, that could last many months.
