I've been having most of these.symptoms for two and a half years now ever since i was pregnant with for first child. i was getting extremely achey joints, blackouts headaches, extreme blurred vision and nausea which was later diagnosed as severe anemia during my pregnancy. my anemia was gone by the time had my firstborn but not all the symptoms. stomach.cramps started after and the lasted for days and felt like i had pulled my.muscles rather that have 'trapped wind' which is what it felt like, i would feel neuseous and id have headaches every morning. if i weren't getting cramps id be very gassy no matter how little i ate or even eating at all. i feel constantly tired and exhausted and i have recently gone off my food simply from.not feeling it or being to tired. my gp had ran tests on my blood, urine, and stools and i have had an ultrasound all have came back negative. and he has said it is ibs. i however.don't think it is and have given up hope on what it could be.