ADHD

Recently, my doctor mentioned that we might want to start thinking about changing my medication (I'm taking Ritalin I think) for my work load as it may not be what I'll need to focus. I've also been having massive mood swings lately, had 2 panic attacks or got overestimated, my mind will completely blank out when I need to think, I'm having trouble talking when I get frustrated, and I've been agitated, and this seems to happen when I take my meds. Am I taking too much or do I need to change the meds?