We had unprotected intercourse 2 days before ovulation (as per tracker app). It was partially withdrawal method. However, had my periods 5 days early (usually doesnt happen). My periods  are usually regular and of 32-34days cycle. Looking back at the tracking app with revised periods date, found that i had ovulated right the next day of having the session. We have had 2-3 withdrawal sessions in the last 6-7months but always have had my periods. Does that in anyway point that either of ours fertility is decreasing? Both of us are 32 years old. PS. We would want to have a second baby sometime, not planning just yet, so we need some expert views.