BBT question

So I can’t really say when I’m supposed to get my period, as I’ve not had a normal cycle since having my IUD taken out. I got pregnant with a chemical the first month. But anyways, my cervix is high (like way the frig up there) super soft and closed real tight. I am between 11-13dpo. My temp has dropped by .3 the yesterday and another .2 today. I guessed about my cycle length so it’s “supposed” to come in 2 days. So really my question is, is it ok that my temp dropped like that? Could I still be pregnant, I thought it had to stay up for like 15+ days to be a good indicator. I’ve been cramping slightly today and the symptoms I was having haven’t showed up so far today.