He lied to me?!

Me and my ex had sex earlier today, when we have sex we use condoms because it is very important to me that we do so. Before penetration, I handed him the condom to put on and ofc I trusted that he did. We proceeded to have sex but the problem is....I brought 3 condoms with me and once I got home and went into my purse...I found 3 condoms in my purse, which leads me to believe he never used it!! Now I’m freaking out because I’m not on bc (horrible for my body) so I rely on condoms. And I would take a Plan B but I have already taken one late last month due to a broken condom incident. When we were done, I had no residue or signs that he came in me but it’s still very frustrating!!😭🤦🏾‍♀️