How soon can I get pregnant after quitting the pill?

Hi, I am 37 and wanting to try for baby #2. I want to get pregnant no sooner than November (God willing of course) because we are going to Brazil at the end of October and don’t really want to be pregnant while there due to the risk of zika virus (mosquito born virus which causes extreme birth deformities especially in first months) Should I wait to quit the pill or quit now? Does it take time to “get out of my system?” I have been on and off it for 3 years, mostly on. Thanks in advance.