Well i have been on loestrin 24 for a yr and 1mnth now and when i...

Well i have been on loestrin 24 for a yr and 1mnth now and when i 1st started i had the btb and then it went away and no other real problems with it...its work the way it should no real bad mood swings/acne/weight gain and lighter periods..but now all of a sudden i have btb again but so much worse..it last about 2 weeks and i get the worst cramps. i don't understand why now that its been a year ( & my body should be use to it) how i have this annoying btb. i just need to know if i should wait it out or just swith bc?? anyone feel my pain??