Hello I m 24 years, my fiancé and I have been trying for a baby just this month. My last period was the 15th September we have had intercourse a fee nights since that finished, going by a few ovulation calendars I m due to ovulate today. Today I have had lower back cramps . Experiencing painful pulls down lower abdomen and dull ache in vagina. No appetite , nausea , tired, headache. Is there a possibility I could be pregnant? Thank you