Your symptoms are suggestive of uterine tightening, probably triggered by your diarrhea
. It is common for mild contractions, the Braxton-Hicks
to occur, sometimes they may be too many and too long, when you need rest and medication. When you have a consistent low back pain
at this stage of pregnancy
, it indicates that labor may be setting in, which is not wanted. You should also get your blood pressure checked as you have headache and vision changes. I suggest that you immediately see your obstetrician for further management. You can in the meanwhile take rest, relaxation in the form of some meditation
and avoid exertion. Wish you a safe delivery.