Am i turning gay after bad break up with girlfriend?

hi, ive wrote a post about my bad break up with my ex yesturday but didnt get a good enough response, we have a child together and i loved her so much, i got forced to move out and missed her and him so much ild wake up wanting her, then it all stopped after i watched porn and couldnt really get fully errect and the thought and shock was "omg im gay", i dont feel attracted to women like i used to coz wen i was with her i used to look at other girls and think "shes hot, i wish" i dont know why this has happend, i used to look at blokes thinking there good looking and saying to myself "my gf would like him" but now i think is that coz im gay but was with her and never realised? ive tryed to picture sleeping with men but nothing down stairs happens, i sometimes get a twitch or a feeling but never hard, my brain thinks of men and tells me sexual stuff but i hate it and tell myself "shut up why are u thinking that" i used to have intrusive thoughts about violence and harmful things and had to say the same thing when i quit weed and had panic attacks so think are these gay thoughts n feelings intrusive? i had a simular feelings once though before me and my ex got together, my friend came round mine in a vest and i had this horrible like gay feeling out of the blue, it got ignored and then was with my ex for 4 years, i picture i my head havin gay relashionships but dont like it and think eerr thats nasty, i look at every man and c if i like em its really horrible for me, theres this guy at work and for some reason i feel very wierd around him because i thought he was gay and its troubled me all day, its a wierd feeling, not sexual i cant describe it like an attraction, i cant get it out of my head, i think im deppressed either from the break up or because of this. i did once try masturbating over a girl in my head and i got a lil hard and then thought about some boy and it kinda did aswel n then i stopped. i feel very anxious and deppressed. what is happening to me? am i turning gay or is this HOCD or what can someone help me please