Having a partial hysterectomy on March 2, only 30 years old. Panicking!?

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I have been having abnormal bleeding and acute abdominal pain since Nov 5, following the c-section of my 4th child. They can't get the bleeding to stop. I've had a d&c, a hysteroscopy, and taken methergine and progestines. I can't have other hormones because I have a clotting disorder. My OB said the only thing left to do is a partial hysterectomy where they will remove my uterus and cervix but leave both of my ovaries. The problem has gotten in the way of caring for my children, both my husband and my jobs and also our sex life. All the info I'm seeing is making me panick a bit. Will having this procedure done cause me to age more quickly and have a diminished sex drive? I also read that climaxes with sex are no longer the same, less gratifying due to the uterine contractions being absent. Are these things true? I know I can't go on with the pain and bleeding but I also don't want to start aging fast and no longer enjoying sex with my husband. Is there anyone who can tell me a little bit about what I can expect post-op? Thank you so much!