New Here and New to the Process

Hello all-
So my case may be complicated so I will try to summarize: my wife and I had a baby 3 months ago and about a month ago, she was cleared for sexual activity so we went for it after not being intimate for about 7 months as she had a tough pregnancy. During that time I probably went overboard with the PMO and when we went to get intimate, I just couldn't respond and/or perform.
Fast forward to today: After extensive research, a trip to my Dr. and bloodwork that didn't show any irregularities, I haven't watched any porn or visited any sites in about a month. My questions are two fold: 1) I've noticed that my balls get sensitive and sometimes hurt- is this typical after not masturbating/ejaculating? Before she got pregnant we were sexually consistent as well as my PMO sessions. 2) In terms of setbacks, I have has a couple moments of weakness where I masturbated and ejaculated (5 times to be exact in the last month or so). Does this derail my rebooting process?

Thanks for any input anyone can provide- I know I have a way to go but am determined to overcome this issue.
j