Heavy IB or period?

Has anyone had an on/off period and been pregnant?

Long story short my last period was 28-04 and I’m due 29/30-05

Had very light spotting on the 22/23rd of this month it was the lightest pink on the tissue when I went toilet and that was it.

then nothing until the 26th when I went to the toilet dark blood came out so I thought this is my period and put a tampon in, went to the toilet about an hour later and no blood? It stopped completely.

Then on the 28th I go to the toilet and I see blood again , for it to then stop completely and still now I’m not bleeding at all?

Has anyone experienced anything like this? And ended up being pregnant ?

Just really confused x

TIA❤️