anxious about family beliefs

my mom says that getting twins skips generations in her family, my oldest 2 sisters can't have a baby and the next oldest we arent sure about but I've beeb pregnant before but I lost it but now sing they know I can get pregnant my mom is convinced I'm the one thats gonna get twins, and twins run in my boyfriends family too so everyone in my family thinks there's no doubt imma get them... i rather not have twins but ive lost 3 babies so rn I don't really care how many babies I have as long as at least one survives