Yes
Pregnancy or stress.
Hmm, maybe, but not necessarily. Try a pregnancy test, the best brands can tell you already.
Missed or late periods happen for many reasons other than pregnancy. Common causes can range from hormonal imbalances to serious medical conditions.
You could be. It is best to take a hpt 5 to 10 days after a missed period to get the most accurate result, otherwie you can get a false negative. Normally a women is late at some time or another. (Stress & eating habits are 2 common reasons why a period is late...Other then pregnancy that is)
Your diet is lacking essential nutrients so your period was delayed and it didn't last as long. Try taking a multivitamin.
take a pregnancy test.
pregnancy
The Merina and other hormone secreting IUD's can have some symptoms of early pregnancy, if your period is 7 days late call your doctor.
Could be pregnancy and early miscarriage. Could also be a long cycle (due to stress, or travelling, or other reasons). Could be medical reasons (i.e. endometriosis, or PCOS). Could be many things. Go see a doctor.
If you are on/had your period your probably not pregnant, but do a pregnancy test to be sure.
Four weeks is a long time to be late. There are multiple reasons for being this late in one's menstration. Most common reasons would be pregnancy or too much weight loss in too little time. In either case, a doctor's visit would be a good idea.
no because your period controls your pregnancy.