Yesterday I had protected sex (condom) with my boyfriend, and it was my first time. I've found out that the guy's meant to withdraw straight after ejaculation (with us this wasn't the case). Today I have stomach cramps like a period, and I am actially due, but seen as its my first time I'm just a bit worried anyway.
Thanks :)

I am 31 and I sometimes still have pain when my husband and I have sex every once in a while. It being your first time, I am pretty sure your muscles in your uterus are just reacting to the activity. You may want to see an OB/GYN if you continue to hurt.

Hope this helps a little. : )

Its most likely your period coming on,combined with the unfamiliar physical activity and worry.

If your period does not arrive or the cramping gets worse call your doctor,as it could be something other then your period.

As I'm not a health care professional I have to err on the side of caution with the advice I give you.

How old are you?

Thanks for your help, it's much appreciated and it's reassured me a bit! And Cat I'm 17 : l

That was meant to be a smile there : )

I've only just realised the age limit on this forum - I'm really sorry, I'm nearly 18, and I just urgently wanted some advice

I moved it to Women's Health. Thank you for being honest about your age.

Please be careful using condoms. They can slip off after ejaculation when there is a lot of added lubrication.

It does sound like sore muscles. However, as Red said, if the pain doesn't go away soon see your doctor.