I've had positive and negative side effects. The positive are I'...

I've had positive and negative side effects. The positive are I've had awesome sweet booty time since I've started the ring, I haven't gained weight (I've gained as much as 50 pounds on other birth controls just to lose that weight when I came off), less body hair, and my anxiety has pretty much cleared up (I've been taking a low dose of zoloft but have pretty much quit since I've been on nuvaring, except I'll take half when I start to have withdrawals). The bad side effects are cramps (but those cleared up for me), a longer period (4 days, which isn't bad, but my normal period is only 1 to 2 days in length), headaches (which I've been getting every day), some mild nausea, lethargy, and I've been getting pimples all over my butt region! I can't decide if it's worth it or not. I really like the pros but the headaches and super tiredness just aren't much fun. Oh I've been craving sweets like crazy, too! But, so far, Nuvaring has been not too bad for me. If the headaches don't ease up, I'm going to try pop's again and if I still have problems there, then I may try basal body temperature. Anybody know how effective BBT is?