Temp dip?

April • Tue, Oct 14 2014 • I have 2 children, 3 furbabies and I am now expecting #3! So thankful and praying for a healthy baby!

I am cd 18 and my temp never dropped below my pre-o temp but just today it did. It was quite a drop. Do temps dip before ovulation normally? Today is supposed to be my peak day according to glow.