I usually have terrible tender breast a few days prior to AF and this month I didn't at all. I usually never have the typical ovulation cm, but this month I did. 8dpo I got a very bad cold which never happens. AF which is always regular showed up 3 days early, was enough (so I think) to rule out implantation but now 3 days later it's gone, and I have a very bad headache and so nauseous my mouth is watering. I'm about 15 dpo now. Tested 4 days ago and got a bfn. Any input? TTC 6 months