Birth control/missed period

Destiny

I had my son 2 years ago. I had been on the pill since I was 6 weeks PP. I was getting a period and everything. Well fast forward to a few months ago. I stopped taking my birth control like ending of September because we want to TTC for baby #2 in January. I want my body to adjust well I haven’t got a period in 2 months as of today. I’ve tested twice and they both came out negative. I’m still BF my son I’m so confused to what’s happening.