"i was using tri-previfem for 2 1/2 years (absolutely loved), but last june when we moved my new pharmacy changed my brand to tri-sprintec. low and behold, four months into the new pill, i got pregnant. my youngest is 6 and my oldest is 10. never had an issue with birth control before. i&#039;m very upset with this brand and i don&#039;t recommend it."