Can you still be pregnant with a low temp?

My temp before ovulation was anywhere from 96.1-96.5 and after ovulation is steadily rose from 97.3-98.1 and it has been fluctuating between 97.5-98.1 for the past week. I think I did have implantation spotting on Friday 9/10 and that has never happened before. AF is supposed to come this Sunday...I hope it doesn't! What do you guys think?