Vagina looser

Ok so I'm super super paranoid my vagina is wider now that I've had my daughter, I've been doing kegal excersises constant since she was born, she's now 6 months. My so, said I felt tighter than before. I think he was being polite. When I feel it myself it feels closed over again, deff more so than it was when she was born, it feels tight for me, but when I'm arouaed I tend to get absolutely soaking, so I don't seem to feel his penis going in and out. He said he can. And he comes quickly when we have sex (after loads of foreplay) he seems to think it's just down to how wet I get. Could it be? Anyone know any ways to tighten it up? Or anyone else have a similar problem?