Okay how do I start, about three months ago I was 3 weeks late staring my period. So I took a test and it said yes. Well about a week later I started my period and I was throwing up and had unbearable cramps. Well is started in time the next period but I still had cramps and I was throwing up, then this time I was 3 days late but the same thing was happening. Does any one know what it maybe or what's is wrong with me.

Sounds like your hormones. If you were late and got a positive on a pregnancy test you most likely were pregnant and had a spontaneous abortion. It may take several months for your hormones to settle out.

You could be having chemical pregnancies where you miscarry very early. If you are having positive tests each time go and get help. If it was a once off positive test then you were most likely pregnant and miscarried early which is so common unfortunately. You cycles will be off for a while afterwards as it took me at least 4 periods to get back to normal. Go chat to your doc.

If I were you, I would have a visit with your doctor. Just to be on the safe side.