Cramps vs pregnancy

Do some people’s cramps get worse when they are on birth control? I am on my third pack and my cramps are worse then normal. I usually don’t even notice them. It’s nearly impossible for me to be pregnant but this is making me nervous. My period is due to start next Thursday.

I haven’t had sexual intercourse in over a month and even then we used a condom and he pulled out. I know I’m not pregnant from that because I’ve been so nervous I took a test today and it was negative. However, we have messed around some and people keep mentioning pre-cum on fingers getting your pregnant, so now I’m worried. So what’s everyone’s opinions?