So confused

[Norsemyth]

Please can some of you lovely ladies give me some advice??

My af is always all over the place no pattern and haven't had one since November ish. Haven't been tracking but poas 4/1 and it was bfn.
Dh and I dtd 6/1 and afterwards noticed I was bleeding a bit, sort of pinky/red. Nothing the next day when I woke tho, small brown discharge on Sunday once when wiping and yesterday light pink when wiping once and nothing else since. No pain/cramps. I thought it maybe af rearing her ugly head at long last but it's definitely not and I'm so confused it's unreal! Could I be pg after all?

Anyone?

Sounds like how my normal cycle is. Particularly if we dtd 3/4 days before AF, I get pink spotting and then brown spotting and then af starts.
You could be pregnant, but you may not. If your cycles are not regular is there a reason for this? You could do with some kind of tracking to avoid this. Bbt monitoring would be good.