I had a girlfriend that went through a similar experience. Which is one of the reasons that I always suggest not switching to ECA to take a two week break from the clen (for those that suggest 2 weeks on/ 2 weeks off). I got cut using just 3-4 clen a day, and the weight started to come off immediatly for me. She was up to 5 clen a day (I weighed 255, she was 110), did aerobics, and wouldn't budge. The problem was that she was taking ephedrine (up to 7 a day!!!) before I gave her the clen. Ephedrine and clen hit the same receptors, so the clen had no effect. BTW, my jaw dropped when she said she was taking 7 ephedrine a day, I can't handle 3.

If anything, start with the clen next time and stay with it until you are ready to go off it for good, then switch to the ECA. Using ECA instead of clen is just a way to save money. Plus the clen is more anti-catabolic so the muscle will be there to burn the fat.

At this point, she has to give her receptors a break.