I was diagnosed with PCOS, I have done 3 pregnancy test all come back negative, my abdomen looks like I am 3 months pregnant very hard, I have been having nausea and vomiting on and off, frequent urination, if they let me I could sleep all day, severe mood swings, feel movement in abdomen, tender breast, and sometimes cramps. Can I still be pregnant after a Negative blood test?

Go get an ultrasound