I'm no expert because every woman's experience is different. The problems your close female relatives had (mother, sister, aunt) may not manifest themselves in you. The anxiety you feel could relate to a trigger based on, for example, someone calling it "the curse".

My suggestion is to relax. Get a warming pad (one you can heat in microwave) and place on your tummy. I used Oil of Evening Primrose capsules, taken regularly one/day; don't work for everyone but worth a try. Gentle exercise; you probably don't feel like doing a 5K run anyway!

Have heard of women using meditation to relax/relieve anxiety. Take the painkillers too.