Stupid question

Ok so I KNOW pregnancy after birth is high. I know unprotected sex during sex leads to pregnancy.. duh lol how did we all get here 😂. I know all of this so spare the nasty comments. The thing is, we WANT to get pregnant again so soon as I had my boy nearly 4 weeks ago. We want another close in age. Thing is, my bleeding has stopped but occasionally I have that lochia discharge where it’s brown. It comes and goes and is very light.. now what I’m asking is, even with that stuff, can you still get pregnant? Is this classed as bleeding still or is it just old blood coming out in discharge?? I am looking to get pregnant so no negative rude comments lol.