The past 3 weeks I have been nauseous, and puking, I also have a poor appetite, any time I do eat I puke it straight back up, I've been getting bad headaches, back aches , and sharp pains in my side, I've also been experiencing leg cramps, my period showed up 5 days late I'm always usually on time, and when it showed up it was like really light blood with brown discharge, as if to indicate it was old blood sorry tmi, before I got it though I was spotting , the period only lasted a day really light only got blood brownish blood when I wiped, I'm really confused I'm wondering if I'm pregnant, I went the doctors before I had got this unusual period and the pregnancy test came back negative, I'm wondering has anyone else experienced this? Or did I test too early? I'm so confused and would really appreciate some help thank you :-)

The test is far too early. You should be testing again in about a week or so. You could be pregnant but you could also have a wicked bad stomach flu. It is the period, or lack there of, that is important. About two weeks late and you test.

Regardless if your nausea doesn't get better soon I would go and get checked out for a digestive tract issue.

Did the doctor do a urine test, or a blood test?

But this is a sign of dozens of things, But yes, you need to retest when you are about 2 week late. While some women have these signs early, normally you would not be having all of this for another couple months from pregnancy