Did y'all feel a weird sensation in your uterus????

Nira • Wifey.Mommy.Happy
So I am 17 dpo, no positive test, but 4 days late...
​My only "symptoms" are veryyy tender boobs, slight cramps that come and go, and the past 2 days I've noticed a weird pressure/bloat in my uterus. Almost like my muscles are contracting inside me but I can't control it. Last night when I was laying in bed it almost felt like a heart beat (I know it's not actually a heart beat, that's the only way I could explain it lol)
​Has any one felt that before their bfp???