belly pains... (be warned maybe tmi)

[xox_jessie_xox]

so last night i kept waking up with really bad cramps like i needed to go to the toilet (but when i did go i didnt need to)... then today the pains are still there but they are making me throw up its like if i dont eat the pains are worse and i throw up... but if i do eat i still end up throwing up!.... the pains just wont go away =[ has anyone else had this? or might know what is causing it??