I had a drink with dinner last night, and woke up a time or two before I normally do, and went back to sleep. Could the drink, or the waking have caused my temp to drop?

This didn't happen last cycle (only been temping for 2 cycles). It just gradually rose. I dont want to get my hopes up for nothing... so I want to see your thoughts on why it would dip.

But I've had 2 dips this cycle and it's odd to me since most bbt charts don't look like this from what I've seen.