Spotting after contact with my husband

Ask ko lang po kung sino sa inyo naka-experience ng spotting after contact? Fertile ako that time tapos makalipas ang isang araw nagkaron ako ng spotting. I tried to set an appointment sa OB-Gyne ko pero hindi ko ma-contact no response. So I decided to have comments from this site. Any idea regarding sa case ko? Sana yung mag-comment is yung naka-experinece kagaya ko, hindi maka-comment lang. Thank you.