Should I get a new IUD with each new sexual partner?

I recently had an IUD inserted. I'm not currently having sex, but wanted to be prepared as I am seeing someone who I may become sexually involved with.

My concern is I was told the IUD would need to be removed if I had sex with a partner and then changed partners later. This IUD is a 5-year IUD and the cost was quite a bit. If I have sex now and then stop for a year (or any period of time) and was to become sexually involved again with another partner, why would it need to be removed? If STDs are not an issue, does it still need to be removed?


How far does my penis go during sex?

My new girlfriend and I had sex for the first time this weekend. Later in the evening, she was curious about something... "Where is that thing going???" she asked. She mentioned that full insertion was painful and she wanted to know what I was hitting, and "how far does it go?" Being admittedly a bit rusty on my knowledge of the anatomy of the female body, I told her that I thought it went no further than the "uvula" (whatever that is), but that I would do a little research, maybe see what I could get off the Net and get back to her.


Was it sexual abuse or just childhood exploration?

I am an 18-year-old girl and it is my first year in college. I am also involved in my first physically intimate relationship. At the beginning of the relationship, I was having a lot of problems with feeling sexually aroused and being physical with my boyfriend. It made me cry almost every time. Then, I remembered some experiences involving adult sexual behavior (both physical and conversations over the phone) with my best friend in first and second grade. I had not thought of these experiences in years, and the memories, even now, make me feel sad, scared, and sometimes guilty.

I remember being afraid to see her and being very upset as a child about what we did. I don't remember much, only very small snippets of what happened here and there. I went into therapy at school, and I can be intimate now without crying, but these memories still bother me and I just want to know what to call it. Is this child-on-child sexual abuse, or just little kids exploring?