Sit on knees and bending when 18 weeks

tara

I’m 18 weeks pregnant

I was putting some trousers on someone with a broken leg. I sat on my knees and belt down a little.

After about 15 mins later I had a sharp pain across my upper abdo and it lasted for about 10 seconds.

I haven’t had anything since but now wondering if I sat wrongly? My anxiety is through the roof especially as I have an anterior placenta so can’t feel kicks yet