I Have Missed My Period And I Had Protected Sex(

I have missed my period and I had protected sex( used a condom). I took first response tests and all said negative. It's been two weeks since my period was due and the test still said negative. I randomly woke up one day and had to go to the bathroom and immediately had the urge to go again and continue to have the urge immediately after I finish going. I do not have any pregnancy symptoms other than frequent urinating and if I was pregnat I would be 7 weeks along but like I said all I feel is having the urge to go right after I finish going and I missed my period.