I am 11 days late with my period, took 2 hpt and 1 blood test all showed negetive
I am having some serious cramps that I can't even explain
Should I wait longer and then take another test or what - I'm abit scared for these cramps and its been almost 3weeks that I am having it.

Please help

If you just had the blood test, it should be correct, so go to the doctor for exam to find out what is causing this.