It could be a variety of reasons that can even conflict with each other, a common factor in irregular menstrual cycles is caffeine consumption. If this keeps persisting, that your menstrual cycle only last one day, then be sure to see a physician because this can lead to constriction of your fallopian tubes.
Yes. From the first day of the last period you had - count forward 28 days (or when you expected to start). Day 29 would be 1 day late.
no, it is not too late
well, first of all, it matters how many periods you have had. if this is like your 1-6 period then it is normal to start a little later or earlier. if not then i would say you would know when you are about 2 or 3 weeks late.
No foods can be used to start a late period. Your period will arrive when it is ready. Unfortunately you cannot force these things. However, if sexually active, perform a pregnancy test.
Yes, if you start the patch late, your period is likely to be later than you expected. Be sure to take a pregnancy test if you had sex without a condom during that two week delay or the week after.
You aren't if you were 7 days late you would be around 5 weeks pregnant. The way an estimated due date works is you start from the first day of your last period. Unless you are 14 weeks pregnant and got your dates confused or had bleeding that you thought was a period but was something like implantation bleeding.
Go and see the doctor
the hell if i know
stress
If you ovulate around day 14 and have regular periods, by LMP (last menstrual period) you would be 5 weeks - the actual age of the embryo would be 3 weeks.
late 1800
Bleeding and cramping like you are about to start your period can signal early pregnancy. If you have not taken a test in the last week, take one.