Hello, i did on 27 april a chest ct scan 64 after one month, 27 may , i did an abdomen+pelvic ct scan 64. is it dangerous for my health?

Yes.. But: CT scan has much higher dose of radiation than other immaging methods including plain X ray. It is now trend to avoid it unless absolutly necessary or it is an emergency. Than we have to weight risk and benefits like any other procedure in healthcare. If you needed it is done - whtever outcome it is follow up with your docotr. For future - better avoid it. Again depends on reasons doing it.