I got off my pill about five or six weeks ago after being on it since April. However, I still haven't gotten my period. On the fourth of December my boyfriend and I didn't have sex but we did grind on one an other with naked genitals. He hadn't masturbated in a day or so and had urinated between masturbating and when we were together. Should I worry about possibly being pregnant, or is my period not coming because my body is still adjusting to being off the pill?