I had dry humping with my boyfriend . I was wearing underwears and shorts and he was also wearing shorts. He ejaculated on my vagina but during ejaculation also he was in shorts and i was in underwears.

I wiped the sperm (which was absorbed in my shorts) with a damp( very little damp) cotton cloth . Then i used that same cotton cloth to clean my vagina also. I got my periods after 12-13 days of dry humping . My period lasts for 4 days . After 10-12 days of my period i had pregnancy test. One test in the evening and second one in the morning ( first urine) . Both the test were negative ( single line on 'C' ).
I had urine test also which is normal but i don't know if there is any special urine test to detect pregnancy. I had the normal one only.
I dnt know i am pregnant or not ?
Are all these signs of pregnancy. Am I pregnant??