I took 10 months after coming off the pill we were both healthy in our early 20's with no fertility issues sometimes it just takes a bit for your body to catch on that you mean business and its not just fun lol if your going to keep using ovulation predictors its alot cheaper to buy them off the net good luck and I highly recommend the ttc groups there
Also forlife brand has a sperm safe lubricant is alot cheaper than pre seed but not quite as good but it did the job for us