My chart is not looking so good anymore.

Temp has been down 2 days now. I'm not sure if it's because I've been waking up an 1 1/2 hr. earlier than normal. Anyways.. I guess I need to watch out for AF. I was getting excited because I had several PG symptoms this last week and my chart looked good. But now I don't think it's happening this month. What do you guys think?