cramps!!!!πŸ˜–

I'm about 6 weeks along and omg I have been cramping like crazy! My husband and I had sex yesterday and after I cramped almost all night long and then today I got off and again cramping after! It's super uncomfortable but I'm not spotting or anything. Which I have already had 2 kids this 3rd pregnancy is so different!!! If I didn't miss my period I wouldn't even have any idea I am pregnant... I do not feel pregnant at all and it's really got me freaked out... like something is wrong.. before I knew I was pregnant I had a night where I had got drunk and then I was flu sick and took NyQuil and day quil so I'm just insanely worried!!!! Any advice or ideas why this is going on?!