Last night we were having unprotected sex & as we were going at it, all of the sudden I felt this tingling sensation I believe my muscles contracted it felt good but nothing like an actual ejaculation, I pulled out, checked my penis but I didn't have that extra sensibility we mens usually have when we come, I had also troubles identifying the fluids on me cause my girl was really wet, I really need an explanationfor the occurred & whether I should get plan B or not