Could I be pregnant? 🤔

So I ovulated on or around the 13th April, had spotting on the 25th only a lil bit and the same again on the 26th, it kept stopping and starting and I only noticed it when I wiped and nothing has happened since. period was due on the 29th so I’m currently 3 days late. Did a test on the 25th but was negative. Was that too soon? Also the last 2 days I’ve had some stomach cramps but nothing major, my boobs feel huge, I feel nauseous now and again, my back also hurts! I’m trying to wait until I’m 7 days late so I don’t get my hopes up but could there be a good chance I’m pregnant?