Pregnant

So I’ve literally just found out I’m pregnant and I’m happy but I feel like I can’t properly feel excited until I know everything is okay! Now that I think about it I have been getting quite sharp stomach cramps over the past week and I don’t know if this is something to worry about? My period was due 6 days ago but never came so I tested. But the cramps have been more severe than period cramps. Is this normal?