Some women notice changes in their energy level, mood, or breasts -- a lot like having PMS. Other signs might take you by surprise, like fainting, a shift in your sense of smell, or more bathroom visits. Your changing hormones kick into gear, even before you take that pregnancy test.
Most Billboard Hot 100 No. 1 Hits By Artist. The top spot on the ranking of the artists with the most No. 1 Hot 100 hits hasn't changed in 45 years, with the Beatles (20 leaders, tallied in 1964-70) fending off closest competitor Mariah Carey (18). Notably, Rihanna has entered a tie, with Michael Jackson, for the third-most Hot 100 No. 1s (13), all since her first, SOS, in 2006. See the All-Time Charts: Billboard 200 Albums | Billboard 200 Artists | Hot 100 Songs | Hot 100 Artists.
Most Weeks on Billboard 200 By Title. Pink Floyd's evergreen album The Dark Side of the Moon continues to hold the record, by far, for the most charted weeks on the Billboard 200: 917! The set, which was released in 1973 and spent a week at No. 1, continued to chart on a mostly regular basis through 1988.