Pregnancy in itself is not an juniry or a disease. You may have no pain.Some people get some discomfort as the uterus begins to grow (16-20 weeks or so) It is related to the round ligamnets getting puled on.Rubbing alcholol used as a disinfectant on a would will not harm a fetus, now if you are talking about drinking it it will hurt you and the fetus.
Yes. As your pregnancy goes on there is more and more weight that has to be supported by the ligaments in your abdomen and legs. As your belly expands, there is added pressure on these ligaments and some women have extreme discomfort, cramping and sharp pains because the supporting ligaments are stretching and pulling. The good news is after you deliver they will go back to the normal size. Speak to your doctor about ways you can minimize the discomfort if it is unbearable pain.