Could The Pressure In Bladder Be Due To Pregnancy?

Hi, may I answer your health queries right now ? Please type your query here... I am 26 about 5 3 the past 2 weeks iv been feeling queasy n a tightness in my uterus the past 3 nights iv had to pee n right after I felt like I had to go again I'm on the pill my period is do next wedenesday iv never felt these before I took a pregnant test this morn but was negative I had fever all day yesteday n a sore throat had taken nightime quil pills could I be pregnant ?