Searching for answer and help

Hello guys. Today I am clean 16 days no pmo at all but I did something which is wrong, it can be a relapse or not I don’t know, that thing is I was talking to my girlfriend via WhatsApp I made a story about us making sex she liked I continue that story and continue chatting with here like 2 to 3 hours I felt dopamine rush like watching porn and I didn’t masturbate. Now my problem is that I am feeling pain around my balls and lower stomach. What does it mean? Do I masturbate now to feel normal? Is there any healthy consequences?.
Please I need help.
Thanks
 
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