I tried a clinical strength deodorant which didn't work much better and had a scent I didn't like...
My first thought was that my hormones were changing. I'm only 32, I'm not anywhere near the typical age when Menopause begins. Although I couldn't help but think back to a magazine article I had read many years ago about a women starting Menopause at 19, which is referred to as Premature Menopause. I also wondered if my hormones could be changing early due to the permanent birth control procedure (read that post) I had had a year and a half ago.
I finally went to my Doctor and she did a blood test to check my hormone levels, which came back normal. The Doctor wasn't any help other than that...
I kept "Googleing" to try and find any suggestions or answers.
Finally I found two very good suggestions that have helped;
1. I kept trying different deodorants until I found one that works. Even if one type from a specific brand doesn't work, possibly another type from that brand may work. I bought the sample sizes when possible to save money.
2. I have started using an antibacterial liquid soap to wash my underarms in the shower to help remove any bacteria. It also helps wash off the old deodorant. Some deodorants are hard to wash off in the shower.
I finally found a deodorant that works better for me and in combinations with using the soap has almost completely eliminated the problem.