Quoting Sophie (;:" Hi ladies. My approach to ttc this month is don't ttc. Lol I'm having abit of an embarrassing problem. ... [snip!] ... the doctors when it started but they said its fine. Does anyone know what it could be? Pretty embarrassed to go the doctors. Xx"
Please excuse the graphic nature of my response but I can't think of a better way to word it while still giving you a direct answer.
Hormones. To help with the tightness and the getting dry you and DH need to dedicate more time to foreplay. That will help the vagina get lubricated and make it stretch easier so that it doesn't hurt. It probably wouldn't hurt to have him manually stimulate your vagina and clitoris before you actually begin to have sex. Having an orgasm before you have sex will help also. If you have trouble staying wet, either you or DH needs to stimulate your clitoris during sex and that will help keep you wet a little longer.
As for the smell and the cause of your fore mentioned bedroom issues its probably your hormones still being a little bit out of whack from when you were pregnant with DD. If the doctor said the smell was normal its probably hormones. I know mine smells different depending on where in my cycle I am and it usually smells the worst right before I O.
Sorry so long, so its so graphic. I hope that helped though.