Hi I need help with bbt please, on the 11th I had a miscarriage at 4 weeks. On the 20th I had a positive opk while still spotting, on the 22nd I had a small spike in bbt and today the 30th I had a huge drop in bbt. My nipples hurt, I have frequent urination and a bloated pulling sensation in my uteris with period like cramps. Could I be pregnant again?