The whole story

So Saturday and Sunday I had unprotected sex and it wasn’t that long and he promised we didn’t cum and I didn’t feel it although I know there is a thing as pre cum anyway on Thursday night I took 2 test 1 came back positive there was a very faint line and one came back negative today I took 2 more and they both came back negative I know it’s only been 6 days but some people say that’s long enough to know. So I have in regular periods so I have no idea when my next one could be. I have been having no pains I know it’s rare to have symptoms this early tho