Insecure

Okay so I’m not a virgin. I’ve only slept with one guy and he had a pretty big penis. At least I think he did I don’t really have anything to compare him to but every time we did it I felt like I literally could not stretch anymore. Well me and him broke up a year ago and I just feel different down there than I did before him. I don’t feel as tight. Also, i can put two fingers in and Definitely am not going to try three so I think I’m okay. But I feel like I might be wider than before. I’m afraid that if I’m ever with another guy he’ll be able to tell and I won’t be very good for him. I know everyone says guys can’t tell anything but I asked my guy friend and he said guys can tell when a girl isn’t a Virgin. What do you ladies think? Is it worth being insecure about?