Consultation for Delayed Menses and Eval

I am writing to discuss a missed period and recent symptoms. My last period began on 7 April, and as of today, 6 May, I am two days late. Key Details: Pregnancy Test: I took a home urine test this morning (6 May) which was negative. Fluid Intake: Yesterday, I consumed a significant amount of water and cold coffee. I am concerned that the high fluid intake may have diluted my urine, potentially affecting the accuracy of the test results. Physical Symptoms: I have experienced specific pinching and stretching sensations on my left side on two occasions recently. I would like to know if I should repeat the test tomorrow morning using more concentrated urine, or if we should proceed with a blood test (hCG) for a more definitive result."