While aspirin does lower blood viscosity, the mechanism that results in this benefit comes with a cost. Over time, the side effects of aspirin include gastrointestinal and liver damage. The proteolytic enzymes in Serrapeptase Rx digest non-living matter in the blood, naturally lowering blood thickness.
You are pregnant but you test negative. Quantitative blood tests and the most sensitive urine tests usually detect hCG shortly after implantation, which can occur anywhere from 6 to 12 days after ovulation and implantation is usually the deciding factor to answer the question how early can pregnancy be detected.
Some newer ultra-sensitive urine pregnancy tests claim to be able to detect HCG as early as one day after a missed period but most health experts recommend to wait at least 7 days after a missed period to get accurate results. If you just cannot wait that long, ask your doctor for a blood test.