I'm on day 16 at my cycle got positive OPK tests on day 13 and 14 and have been BDing a lot! Faint OPK test lines on day 12,15 and today.I felt Quite nauseous all today which is unusual. Is there any chance this could be early morning sickness do you think, is there a 16 to early for morning sickness? Especially as I probably only ovulated two days ago? What do you think? Here's hoping!??