Implantation bleeding

Has anyone ever experienced this, it would be my third pregnancy - I didn’t have it for my previous 2. At first I thought it was my period but it was very light and stopped after a few hours. I’ve also had a few cramps and felt sick.

I took a test this morning which was negative but the bleeding only happened yesterday.

We’re not actively trying as we have 2 under 3 😬 but did have unprotected sex around 10 days ago.

I’ll test again in about a week I think but would be interested to hear people’s thoughts!