About how long after my skipped period should I start to think about a pregnancy?

How about now.... If you are normally regular and now you missed your period, your chance if pregnancy is high if you have been having relations wiithout protections/the pills. Home pregnancy is quick, simple and highly accurate--usually it can dectect pregancy within the the week of missing your period..Or about 2-3 wks from date of conception. Consult your doc and good luck.