Am i Pregnant? First time

I’ll will try and keep this short!

My period was the 13-17th June and on the 27th June I had unprotected sex and it was directly on my peak fertile day, my husband didn’t pull out.

yesterday I had restless legs and cramps and thought it was just tiredness from working. I woke up this morning with the tiniest amount of spotting so I thought it was my period beginning as tomorrow I am due my period.

I put in a tampon before work as my period gets heavy almost as soon as it starts.

I went to the toilet 4 ish hours later and removed the tampon and there was a small amount of bleeding covering maybe half the tampon but not saturated….so I put on a pad. This was about 5 hours ago now and I’ve had no bleeding at all other than when I went to the toilet and I had drops in the toilet?? I have had horrible cramping all afternoon and they have only just died down 12 hours later.

I’ve never been pregnant before or know much about implantation bleeding, I’ve seen mixed stories about the amount of bleeding woman get. The bleeding is red like a period, not red or brown.

I’m at a wedding tomorrow and now I’m getting worried about drinking, I don’t know if it’s just my period but it’s so unlike me to bleed like this.

My question is, did anyone have red bleeding from implantation? do you think I’m just getting myself worked up and it’s just my period being off?