If you have based the form on a query, the query may be filtering the records, even to the point where it filters them all out.
Or you are applying a filter to the form when you open it which does the same thing, so remove it. Perhaps more likely because you wrote "I went back to the table that the form was created on"
Or you are opening the form with Data Entry property set to Yes (less likely IMO)
Is this a single record form design or a datasheet, or a continuous form? If single, you are using the navigation control to find your added record(s)?
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.