any advice would be greatly appreciated

Lindsey
I am new to TTC, so this is my first month using OPKs and BBT charting. I feel like I am going to lose my mind trying to interpret what it all means. I have read that after O temps should stay high and when drop off AF is coming. So far
 mine keep dipping. Today's was messed up due to not having the 3 consecutive hours of sleep before temping ( my toddler was in bed with me and kept waking me up) and the room was also a little cooler than normal because it got hot in the middle of the night so I opened the window right beside my side of the bed. Does anyone know if it there is still a possibility that I could be pregnant even though the temps are a little crazy? I'm 4dpo today. Hoping I'm not out this month :(