It sounds like barrier methods, like pp said, diaphragms, cervical caps, etc. would be best for you. I do not like to use hormonal bc while bfing. I was on the minipill for a while but it caused a lot of spotting when I finally got AF back, so I stopped using that.
If AF is back for you, have you looked into the Fertility Awareness Method? It is 98 or 99 % effective. I can't remember which when used correctly. A good book for this is Taking Charge of Your Fertility by Toni Weschler. It basically teaches you to chart your cycle based on basal body temperature and checking your cervical fluid. You then know which days you are fertile and can either abstain or use a barrier method. It is also highly effective for planning pregnancy, as you know when you are most fertile. My friend tried for months to get pg. I lent her my copy of the book and she was pregnant the next month. So even if you choose not to use FAM for birth control, you may want to look into it when you plan to have your next baby.