Hi
Even if you are not having sex and he is not coming near you, there is still a possibility that some precum has come into contact with your genitals - precum contains sperm, which can swim up the vaginal canal, so there is still a chance that you could be pregnant.
Taking the pill now, will not make any difference. You period should only come every 28 - 32 days, so you are not yet late and those symptoms could just be your period coming.
Many home pregnancy tests claim to be 99% accurate on the day you miss your period. But research suggests that most tests do not consistently spot pregnancy that early. And when they do, the results are often so faint they are misunderstood. If you can wait one week after your missed period, most home pregnancy tests will give you an accurate answer. Ask your doctor for a more sensitive test if you need to know earlier.
best of luck to you.
