I am 9 th week pregnant. Doctor said twins. I have lower abdominal pain like period cramps is it normal

congratulations... dnt worry its normal

If the cramps are coming and going and are not subsiding with rest and drinking fluids then please mention the same to the doctor. At times in early pregnancy the uterus can try to expel the baby considering it a foreign object. The hormones help to support the pregnancy. The feeling is this little struggle that is happening. If it is uncomfortable the doctor may give you some medications to relax the uterus.