I had this almost all day every day for weeks on end, I was convinced I was about to start my period at any moment... Apparently it's normal and just everything stretching. I'm 24 weeks now and all is well. Unless it's accompanied by bleeding or severe pain I think it's supposed to be normal
Yes perfectly normal, with my first pg I was convinced I was loosing the baby, felt like AF was coming any minute, but had 4 perfectly normal pregnancies and had degrees of pain the brought me to tears like AF cramps. They lessened after subsequent babies. Take comfort that all was well on your scan and your body is adjusting and stretching.