What Causes Nausea,vomiting And Frequent Urination On Being Diagnosed With Bipolar Disorder?

Good night! My LMP is 11/19/2014. I am usually irregular. I had intercourse on Dec 13.Multiple Negative HPT and Blood Preg Tests. My concern: I Have bipolar Disorder and take 11 different kind of meds. Symptoms of: sore breasts, nausea, feel vommiting, abdominal camping, frequent urination (specially at night with many accidentes on bed)It is posible that My psych meds could give false Negative in BOTH types of testa?