Tights or skinny jeans do not affect a woman's fertility.
Being overweight or obese affects fertility, and it's also possible to be too skinny for optimum fertility. A body mass index (bmi) below 19 may reduce fertility. If your age is correct at 43 that is the most important factor if you're trying to conceive - see a reproductive endocrinology and infertility md for testing and help.
Would you like to video or text chat with me?