Headache!

TTC for months now. I am on day 39 of my cycle. No sign of AF. I have had severe headaches for the past 3 days. Making it hard to function. I also have tender breast, dizziness, and just plain tired! Took a clearblue advanced this afternoon and got a bfn! :(( so discouraged and needing advise with these headaches. I have a 3 year old to whom I have too be two steps behind all day.