This is interesting. I have been on Seasonique for 6 months and also had problems losing weight. However, I also take Paxil and assumed that was the problem. I may need to investigate more.
BTW - When you were taking Seasonique, what day did your period start? I took my last active pill on Sunday, and it's Thursday, and I have yet to start (don't know from last cycle of pills as I had breakthrough bleeding that ran right into my period). I feel kind of crampy with low backache as I usually do every month, so I feel it's coming...
Good luck on Alesse...let us know what it's like