I've been with my partner just over a year, I found out I was pregnant in November and at the same time I found out my partner had cheated on me a month before, we agreed to work things out for the sake of the baby however today I found a used condom rapper in our bedroom, we don't use them anymore due to not needing to and I know for a fact that it couldn't have been there from when we did as I have completely blitzed our flat for the arrival of our baby in august. I confronted him and he said I was over reacting and he hasn't done anything, he said it could have come from anywhere. What do I do?
Any advice will be grately appreciated