Reassurance needed

Elizabeth • 25 years old. TTC #1 after miscarriage in 2012
This weekend my husband and I moved into our new house! It's been very exciting and stressful at the same time. My husband and his friends did most of the moving and I mostly unpacked and moved some light boxes. Today I am 9 weeks and have noticed some light cramping. No bleeding. I'm a little worried I may have over-exerted myself. I go for an ultrasound on Thursday and I just need some reassurance in the mean time.