What does arousal feel like to u

Hey guys recently I been facing anxiety because I have a fear that I acted on something I know I didn't do but it feels real because it felt like I had attraction and arousal to a younger photo of a ex gf I feel so weird feel so anxious I need help Idk what to do

18+ Don’t view if under 18 People say ocd arousal isn’t actual arousal feeling but it’s groinal response but mine feels like actual arousal is this normal?

How strong does the groinal response feel for any of you? I ask this because I genuinely cannot tell the difference between what is a groinal response and what is true arousal. A lot of the times the groinal response feels even stronger than true arousal. On top of that, the more taboo or disturbing/graphic the thought (particularly with POCD), the stronger the response/arousal is. Is that normal? I'd like to hear any of your experiences on the topic.