100% normal. The influx of hormones causes cramping and inflammation. Even your kidneys get inflamed and thus cause cramping (and also the frequent urinating). Also, as the embryo gets bigger and your uterus starts to expand there is more cramping. I had a miscarriage 10months prior to my successful pregnancy and oldly enough the cramping felt "different". But I dont know how to explain it. Research what progesterone and HCG do to you as well as how the corpus luteal cyst forms and acts etc...helped me to understand better.Take a deep breath, take warm baths and try and relax. The first trimester is scary and hard and the best we can do is try to breath through it and distract ourselves. YOU. GOT. THIS.