Could I be pregnant?

Ashlee

So I’ve read that your BBT staying elevated after ovulation is a good sign of you being pregnant I’m 19 years old going on 20 in January and normally im a 98.5 - 98.7 and for the past couple of days I’ve been between 99.0 & 99.4 and also I’ve been feeling a little nauseous lately and woke up with the left lower part of my abdomen feeling pretty sore and I’ve been really really emotional I’m crying over everything my period is due in 4 days please help ☹️🤞🏻