First egg laid one week early. Four days and no more eggs. Concerns?

spider wasn't due to lay for another wee. Laid one mon am. Female kicked it out.wasnt looking egg bound . She's just coiled up in the back. Took the one egg out and put in incubator. Concerned? Thanks. Bruce

Are you certain it's a viable egg and not a slug? Does it have veins? Can you post a picture of it?

Not a slug. Looks normal.to be honest I'm pretty sure I candled it before putting in the incubator, and it was fine. Just not 100% sure I did. I'll check again tonight. Just wondering if anyone has had This happen before. Today is day four.