first and foremost my congratulations for giving a good idea of your problem you have diabetes and asthma i am assuming that both are normal and under control however from the query i fail to gain what medications you are on as for skipping heart beats i think you shoudl have an ecg tested and a holter monitor better still besides have your sugars tested (if not tested) low or high sugars can also cause trouble besides have a kft tested diabetics very often develop kidney disease so that should be evaluated regularly i would prefer you to get the test reports done thereafter we can probably give you some advice as per the reports and the problem diagnosed lets hope nothing significant turns up and we have to think of some benign condition like anxiety best of luck