I been ttc for year and half now I’m 15 days late first time af late this much, my last period was 7 weeks ago 8/6/2018 , i did home test and blood test and was negative my doctor said take another blood test after one week , and my mom friend said that she knew when she put her hand on my throat and pulse in the neck is beating faster she say that in Africa they knew this way and she knew that in her 3 pregnancy Why do you think?