Is it possible to have post tramatic stress disorder from being cheated on?

My first husband cheated on me alot. Well i'm remarried and last yr my 2nd husband and i seperated he always said he wouldn't leave unless i cheated well he lied. So now i have no trust in him. I have neve caught him cheating as a matter of fact he is always over at my house usually and we still sleep together even though he lives with his brother and his wife. He had to fly to Colombia because his mom had a stroke last week. Well since he has been gone i have had nightmares about him cheating. His ex wife is there and his son he hasn't seen in 7 yrs. I had these dreams off and on before he left but now 3 and 4 times a week and there very detailed the girl he cheats with always looks different? I know because he is far away he knows he will never get caught this adds to my stress. He made me feel bad for even bringing it up he said my mom is sick i'm not on vacation!! So i dropped it plus he calls me when he says he will not that often though expensive. Is this tramatic stress disorder