@Optimest, your feelings of shame and confusion are completely normal. Lots of us have gone through the same thing, and lots of us still fight with feelings of shame over our incontinence.
You're doing the right thing by making an appointment to see your doctor, even though it's a month out. In the meantime, it sounds like you're doing all the right things to manage the problem - you're using absorbent products, you're confiding in trusted loved ones, and you've found a very supportive online forum to help you work through the issues.
One suggestion I'll make is to avoid trying new things when you're going to work. If you want to try something new, whether it's a different product or using a bit of powder, you should do it when you're home, so you'll know how it works. I remember early in my incontinence journey when I tried out a different brand of pull-up, then took my kids out shopping. In the middle of the shopping trip, I found out that the new pull-ups were not as absorbent as I'd expected. I was fortunate not to leak, but it was a close call. After that, I've avoided trying any new products unless I'm at home, or someplace else where a leak or a sudden need to change won't cause a problem.
Meanwhile, stay positive. This is just something to deal with, and you're doing a great job of dealing with it. Keep it up!