Bleeding on most fertile day

My husband and I have been trying for about a year now. I was pregnant in February 2015 but miscarried and I've tracked my ovulation since. I have two children already from a previous marriage and want to give my hubby one of his own. yesterday was my most fertile day and I spotted in the morning and bled a little when my husband and I had sex last night. And I'm not bleeding today. This has never happened to me before and I was just looking for some advice or if anyone has experienced this before.