10dpo- am I pregnant?

Could I be pregnant? 
My cycle is around 31 days. 
First day of last AF was on Jan 14 and I am suppose to get my AF on Feb 14
I O'd on Jan 30, CD 17
We DB on Jan 29 & Jan 31
DPO 1-3 - felt a full feeling in stomach, loss of appetite and a pulling stretchy feeling in stomach, DPO 8-9 - my throat was sore, I thought it was a beginning of a cold as the weather had changed but by DPO 10 the sore throat was gone and I did not have any other cold symptoms.
DPO10- I feel like my AF is coming, about to flow feeling and slight cramps but not as much as I normally get. Last month I had horrible cramps.
I also feel tired, I went out on DPO 8 to a lounge to celebrate friends bday but I found myself wanting to sit rather than stand, just felt really tired. 
My BBT before ovulation was in low 96 and after ovulation it was been over 97, i normally check around 8:30am and past several days it has been 97.6. Today i checked around 9:30 and it was at 98.1 which has been the highest it has ever been. I checked again later on in the day and temp was 95.8 (does temp normally go down during the day before a BFP?)
I also did a HPT this morning and I got a BFN
Any chance I can be pregnant?