I am so confused..

So I am so confused and wondering if anyone can help. So my man ejaculated in me twice this past week. The first time was suppose to be couple days before my period and the second time was a couple days after. However, I took a pregnancy test right before the second time and it was negative. So, it said I wasn’t pregnant but I am now 5 days late on my period and I do kinda feel symptoms but I know Prego symptoms are similar. I am not sure if maybe the test came out negative because it has only been a week? I tried researching if a pregnancy test can show up positive if it’s only been one week conception but I’m still really not sure. Does anyone know what can be going on? Can I be pregnant and its just too early?