How do pregnancy and miscarriage cramps feel?

Ok today has been really bad for me. I'm having stabbing pains, stretching pains all below my belly button to my pubic bone. This all worsens with any activity including standing up. I've had 1 panty liner with pink streaks/spotting and 7wks 5days. Last week had a scan with strong heartbeat. These cramps are horrible today. They're taking my breath away, stopping me in my tracks and constant for about 9 hours now. Called obgyn and they didn't call back today so I'm quite irritated. They make me feel like I'm not a priority because I'm not far along