Anyone had what they thought was there period, only to find out they were pregnant?

Wondering if anyone has had what they thought was their period but ended up being pregnant?

I have a 7 day period and this cycle it has been different. I was 2 days late, spotted brown for a day and then really heavy brown blood the next day. Then it went pink for a few hours. Stopped on day 3. Now been spotting brown since. I'm on day 6.

Normally my pms symptoms disappear after 1-2 days but I'm still feeling sick, headaches, and moody. and am off certain foods and smells.

Wondering if I should test. And if anyone had a similar experience and ended up being pregnant?