Aches & cramping

I'm 19 weeks tomorrow,I had cramping all throughout the first trimester even some bleeding at 9 11 and 14 weeks but the past few weeks have been fine,however the past few days my lower tummy always feels achy along with coming & going cramps too,in the morning when I get
Up it feels sore & lasts throughout the day as i said constant aches & cramps,I've got a scan tomorrow to check things but just wanted some advice & reassurance I suppose. Thankyou in advanced