Really need help please x

So I started my period November 19 and it ended on the 23rd. This app Said would start ovulation on the 3rd of December and end on the 9th.... my next period starts in 6 days.

I had sex on tuesday 10th November and he came inside me then I had sex on the 11th but he pulled out just before he came.

Now I feel I may be pregnant I have this horrible feeling that just won’t go away and everything feels like a reality, I’ve never felt this way before when I’ve had a scare.

I’ve got mild cramping and lower back pain which started yesterday 7 dbp. And still having them today even tho I don’t start for 6 days.

I took a test yesterday and it said negative could I be to early for it to show up or am I just reading way to much Into it.... I appreciate as much help as anyone can offer x