Implantation Bleeding

Hey Ladies!

I have a question. My husband and I are trying to get pregnant with our first child. My period is is usually irregular so it was no surprise this month when my period wasn’t in time....4 days late to be exact....then Saturday I noticed when I would wipe after urinating there was this brown discharge....put on a liner and could ware the same one all day and there is barely enough to fill the liner..... and I would have a small cramp here and there..... about 2 a day....now today I’m having a little pressure in my pelvic area. I did a google search and it suggested it was implantation bleeding and I could possibly pregnant!

Has anyone had implantation bleeding? Does it really happen??