I think the Feb 14th incident is more likely to cause pregnancy than the 21st. Pre-ejaculate can cause pregnancy, which is why it is so important to use a condom the whole time - if not, than use some back up birth control like the pill or something.
Anywho - If you had a regular flow this month, than chances are very slim that you are pregnant. Yes, it happens that some women do have a period-like flow when pregnant, but it's extremely rare.
Your extreme hunger could be caused by stress (maybe because you think you might be pregnant) - and the stomach cramps/nausea could be caused from your excess eating. Your eating could also be the cause of your tiredness.
Wait until your next period is due - if you miss it or it's very very light, then take a test.
In the meantime, try to get some exercise to help destress and eat as healthy as possible.
If you are really worried, wait until a first morning urine and re-test.View Thread
Go see your doctor. These are not pregnancy symptoms and you could be having either a bad reaction to the hormones or it could be implanted incorrectly. Your partner should not be able to feel it after this long and numbness is a red flag for bigger issues.
I totally agree with tlkittycat19678 - also, if you are really close to another woman, their hormones can actually effect you as well.
At my old office (it was small) all the women's periods synced up - and I currently share an office with my boss. Within 6 months we were synced up. Once I got pregnant, her period was late. It is possible that if you spend enough time with your cousin your body could react to her body's releasing of hormones.
Yes - you could definitely be missing your period because of other reasons. Your period could be normal for 20 years and then be missed for some unknown reason - stress, change in exercise/diet, hormones, etc.
If you miss a second period, try testing again - but even if that comes out negative, you should go to the doctor to make sure something else isn't going on.