The dip at 6 dpo could be an implantation dip...although, I've had "implantation dips" before in cycles that were BFN. As for yesterday's temp, it could be AF on her way, or it could just be a random low temperature. That does happen sometimes. Since your temperature today was above the coverline, but not as high as earlier in the 2WW, I think it all depends on your temp tomorrow. If it goes back up to a higher level, I'd say you still have a pretty good chance this month. Best of luck to you!!!
The key word to taking BBT is CONSISTENCY, and you also need 4-5 hours of uninterupted sleep to get a good graph. The whole purpose of a BBT is to get a temp while your body is at a RESTING state.If you look at my graph, there was days i took my temp at different times of the day and some days i didnt get enough sleep or was waking up off and on. You can tell by my graph. This last cycle i made sure i got enough sleep and you can see the graph is perfect.
Im not sure about if clomid alter your temps like that or not. I think its because your not getting enough sleep.
SSBD, Good Luck