#proventil

Question for fellow asthmatics out there: has anyone had trouble with a proventil inhaler? (They're the bright yellow ones with the round, orange, cap) I usually use a Ventolin inhaler (the blue one with the counter in the back) but this time around I got a Proventil. I just used it for the first time and found a greater level of dizziness, tremors and all around jumpy feeling than I'm used to. I'm going to talk to my husband when he gets home but for now I was wondering if anyone has had similar experiences. Does anyone know if this is normal for this particular inhaler?