A lice-killing lotion containing 1% permethrin or a mousse containing pyrethrins and piperonyl butoxide can be used to treat pubic (crab) lice. These products are available over-the-counter without a prescription at a local drug store or pharmacy. These medications are safe and effective when used exactly according to the instructions in the package or on the label. Lindane shampoo is a prescription medication that can kill lice and lice eggs.
Trichomoniasis is another type of vaginal infection. It is caused by a single-celled parasite that is usually spread through sex. In addition to causing bleeding after sex, it can also cause vaginal discharge and itching.
Cramping after intercourse occurs because of contraction of the uterine muscles. This is normal when there is excitation and orgasm. But significant cramping after intercourse could be due to endometriosis. You may use a heating pad afterwards over your lower abdomen or take a hot bath since these aid in muscle relaxation. Using NSAIDs like ibuprophen can also be helpful for many women.