Could I be pregnant even though I was on my period

[M28mum]

I met a guy at a festival, had an amazing connection with him and spent the weekend with him
I've come home and met him, stayed the night at his and obviously had sex.
Now that was 2 weeks ago, I'm sat here with waves of sickness and sore boobs.
With my other 3 pregnancies I knew at 2 weeks, my only problem is I was on my period. It ended 3 days later but I've now learnt sperm can last upto 5 days in the body so that would take me to my fertile window.
Should I wait to test cus it might be pms starting or just test anyway cus I might be pregnant?

It’s possible to have regular “periods” during early pregnancy. I’d test.

Yep. Sperm survives for a while you could be pregnant.

That would mean you ovulated on day 5 of your cycle? That would be very early. How long are your cycles? Very short?

I got pregnant about 5/6 days from the start of my period, so yes it’s possible