Hi, I am 33 and 22 weeks pregnant, overweight, diagnosed with insulin resistance in February, then put on Glucophage XR. Have not had any side effects other than nausia in the first two weeks. The past few days I experienced a strange thumping in my neck on the left side, experienced the feeling of an air bubble going up my neck over the front of my face over my nose through my right eye. That happened once, thereafter just the thumping feeling in my neck on left. Im scared that may be a bloodclot or stroke signs, no other symptoms though.