SO frustrated! returning to regular practice after a break

hey everyone,

i returned to practicing about 3 weeks ago after about 2-3 months of only going 1-2x a month at most. prior to this serious downgrade in frequency, i was going about 4-5x a week (and completed two 30 day challenges since i started practicing back in 3/10)–i [used to–see below] consider myself a decent practitioner (not just in frequency, but in “quality” [for lack of a better word?] as well, and compared to my present situation, never got nauseous and only got dizzy from time to time). since i’ve returned about 3 weeks ago, i’ve been going to class 3x/week. ok, so! there’s the background info.

my practice is HORRIBLE. HORRIBLE. it’s not even a matter of my flexibility and strength being horrible–i know that will take time to get back to what it was, and i’m ok with that–it’s that at approximately the end of standing forehead to knee, i get ridiculously nauseous, light headed, and dizzy and can barely seem to complete one set of the remaining postures. aside from other things, this means that i don’t even have a chance to work on my postures to build back my strength and flexibility. i understand that going back after a break is difficult, but this seems way way excessive, and even when i was only going 1-2x a month for the last 2-3 months, did about 100x better than i am doing now. and it seems to be getting worse. last night after class, i was so “out of it” and had to sit in my studio’s lobby for a while because i could barely stand/felt like i was going to puke (…and not to gross anyone out too much–though since we all endure the sweat-fest of hot yoga, it seems hard to do–for the first time, i felt the need to kneel over the toilet in the locker room after my shower because i felt like i was going to puke). i’ve also noticed my heart rate after class remains very high, which i never noticed before.

i really can’t pinpoint anything that’s drastically different in my life/body now compared to when i began practicing/was going 4-5x a week. the only thing i’m doing “different” is that i’m on Weight Watchers, though i really don’t think it’s that, because i feel more than “full”/my eating habits prior to WW weren’t such that i can believe this is all from a reduction in intake (i.e. my diet really hasn’t drastically changed, WW just helps me control and track snacking/overeating and drinking on weekends, which fortunately seems to be helping weight loss).

anyway, i’m starting to lose hope. what gives? any suggestions? anything would be appreciated at this point.

frustrated (and sleepless… arg!),
mel