Newbie TTC

Heather • Wife 3/28/15. Mother of 4 furbabies. TTC #1
For the past two nights I have woken up around 4am so hott. I have the fan on. Usually I am freezing with or without the fan on. Last week I think I had implantation bleeding as well as a few others thought the same thing. Is this part if early pregnancy or am I just changing? Too early to test. Been impatient and have been testing the past three days. I still have about 11 days until my AF is due.