Self conscious?

I think you have no need to worry. Your satisfying you man and just need to work on keeping him from cumming early. My wife and I have two kids and I still enjoy having sex with her as often as possible. her figure has changed some, but I want her to know I need her emotional AND physical intimacy. I think you just need to embrace it and be patient. Just work on him learning to control himself and I'm confident that you'll start to feel better. I'm sure your a beautiful, sexy, and sexualy fulfilling woman. :-)

Congratulations on having your 2nd child.

I'm not sure what you are self conscious about. It sounds like your boyfriend cums quickly which if you were too stretched out probably wouldn't be the case. Not many men can come (and I assume you mean ejaculate) twice in a short period of time.

You can also strengthen your PC muscle (yeah, the same ones you worked on for your Keggle exercises) which will make you have better orgasms yourself and your lover.

If the vagina is too loose it can cause a lack of sensitivity on the penis during sex. Although from what you say he has not problem the first time. The second time always takes longer (at least that is my experience), so I am not thinking he is not getting stimulated. What stimulates us is the rubbing of the penis against the walls of the vagina which is why guys like tight pussies. If you think this is an issue you can try closing your legs some and "clamping down" on him during sex. There are also some recommended excersizes for women to tighten their vaginas that you could probably find in the internet, but they involved tightening the groin muscles.

Well as far as I have heard most men don't think there is that much of a difference. Secondly most men are just happy to be having sex. I think you should just sit back and think that most women your age and older are in the same position, and most women continue to be sexy and satisfying, as well as most middle aged men are having sex with women who have given birth, so there is absolutely no reason for you to be self-conscious- your NORMAL! I just give you props for being a mom of young children who is worried about sex rather than dreading sex and worrying about the kids. Maybe get your boyfriend a penis ring, it might help hold him off a bit, or tell him straight up that he's not giving you enough time to get hot enough. It seems like your self consciousness is coming from the fact that he isn't doing it for you well enough Its not because you are loose.
Good Luck:)