I'm A Little Concerned. The Last Two Times I've Had

I'm a little concerned. the last two times I've had sex I've bled. no pain. today it happened, not as much blood as last time though.. my boyfriend isn't huge as you would put it, but the common factor is timing. today is the day after I supposedly ovulated and last time was day of ovulation. I just turned 40 in July and I've never been pregnant. is this normal?