These delusions are called ideas of reference Moose. You can get them when you are hypomanic and usually have insight about them being delusional. Its a good thing to consult with your doctor about augmenting your medication or supplementing your meds with another antipsychotic. If you have ideas of reference when full blown manic you would have no insight into their delusional nature - they become your reality as you have become psychotic. This state usually will land you in the hospital as a manic episode this acute needs pretty severe intervention. I have ideas of reference both when I am hypomanic and manic. I also have ideas of influence when manic. This symptom is an important indicator that you need help.

http://en.wikipedia.org/wiki/Ideas_of_reference