Spotting after sex...

So I'm not normally one to feel comfortable talking or asking about this but I'm at loss right now.. my boyfriend and I have been trying for a baby for a month now. I'm not expecting to be pregnant any time soon. We have had sex maybe twice a week. Well  the last three times, I have bled a little directly afterwards. Of course me being worried, I googled it and that's not the ideas I need in my head:/ has anyone expirienced this before or may know the cause? I can't see my gynecologist until the middle of December. Any ideas??