Hi, towards the end of January I had an erupted cyst on my ovary. About a month ago I swapped from the microgram pill to Diane due to acne problems. During this time I have been fatigue, dizzy, tired, nauseous, exhausted and and recently on top of this I have become sensitive to smelling certain foods, lower abdominal pain, lower back pain and cravings. My boyfriend and I have had sex within this month with and without protection on several occasions although he always says "he pulled out". I have taken an at home pregnancy test but could I be pregnant even if the at home test says negative?