I have been getting funny feeling for the last 3 weeks. Don't know if it is bh because I never got them with ds, but it is usually a couple of times a day, mostly at night, when i am walking that I just get a strange feeling that kind of takes my breath away and my tummy is tight??? When I stop walking they stop after about 20-30 seconds. I am 22 weeks. Any ideas?? I am not sure if it just bubs jumping around when I stand up.