Pregnant or not

Hi I have been TTC for 6 months. My period is 5 days late now and I have intermittent cramps, increased urination and my nipples are *slightly* more sensitive than normal. I took a pregnancy test on Monday with a negative result and took another one this morning with again negative. I am thinking of testing again either Sunday or Monday if I still don't get a period, and if its negative and still no period I will be calling my doctor on Wednesday. Any of this make sense?