Period late but some spotting


So my period is 2 days late. I have a few spots (usual symptom) but no pains (usually I have them pretty extreme). I’ve been spotting since the day my period was due - a light pinkish colour. It’s not enough to wear a pad or tampon and usually my periods are very heavy.

Thoughts? Is this just a really light period or is it worth taking a test?

Not sure!

I have been TTC for 18 months now.

Also as an edit, it’s 14 DPO now so seems too late for implantation bleed?