6 days late.. implantation vs AF

Was six days late. A couple hours a go I went the the bathroom and whipped and it was pink and creamy.. put in a pad and it was brown..

I’ve had no signs of AF ( I can tell when she coming) but lots of pregnancy signs. (Bloating, hot, ( I’m anemic) so I’m rarely ever hot.. cravings/ just eating a lot more tired, sooooooreeee breast especially the nipples they are extremely hard, rotten egg farts 🤢) me and my bf hadn’t seen each other in a couple weeks and last night he says.. you know you’re boobs have gotten bigger that’s something I noticed.. cause I have baby boobs 😂

I already told my bf I was late just because I was so late but i don’t want to say that I started bleeding yet just if it’s not really my period.

I was reading about this so called implantation bleeding that says it goes and comes and it’s pinkish with light cramps..

I have not taken a test. ( don’t say take a test) just need to know for those that have had implantation bleeding how did you tell the difference?