Late on my period

Aimelys

So this is my story right now. I am 4 days leave on my period. My husband does not finish in me but I am not protecting myself so I know that anytime it can happen even with a little of sperm. I have had it happen before where I have gotten faint lines before but I was never pregnant and I do not want it yo happen again because it is so sad to realize that you’re really not pregnant. My boobs hurt but no cramps yet. I normally get my period right after but has this happened to anyone? I have tested and it comes out negative twice already..