Premenstrual problems add another level of neuroendocrine changes to the body and one aspect is that it heightens catecholamine discharge anyway (i.e. the amount of adrenaline running through your body). So, when you take the psychstimulant you might be getting an over-the-top effect accounting for your jitters. Yes, see your doctor and look to find an optimal dose during this period which might be slightly less than you are on to compensate for what the PMS is doing to you.
One would arguably say, treat the PMS independently. For example, increasing your exercise routine, slight dehydration (to combat excess bloating) and watching your nutrition. PMS can lead to emotional mood swings, tiredness and feeling unfocused just as much as ADHD.