18 and Miscarriage and maybe pregnant again

So I’m just gonna get straight too the point. I and my boyfriend do have non protective sex..Because of that I found out I was 5 weeks along around January 9th then ended up having a miscarriage on the 14th...It will sound bad but it didn’t emotionally hurt me as much as I thought..Of course I was still sad but I guess It just was not meant to be.

About 2 weeks after the miscarriage I and my boyfriend started having sex again but I ended up still getting my period But my period has stopped halfway through and now I’m just getting brown discharge?? I took a test a week ago and it came out negative.

Can any moms give me any type of advice? I doubt I’m pregnant again but I’m truly not sure.

Just a note that my boyfriend and I do have a good source of income and he has a apartment that I stay at 6 days outta the week.

He is a very good man and treats me very very well and spoils me very much. He is already a father too a wonderful little girl. I do very much want a family with him but it’s a little early on but I know if we did have a baby,it would be very well taken care of