Is my belly supposed to be sore to the touch while pregnant ?

I get random cramping probably like 1-2 times a day typically at night. It takes my breath away and I breath through it and it last about 10 seconds. This has gone on since 12 weeks and I am 19 weeks today. My doctor doesn’t seem concerned and just said drink more water.

I was wondering though if I lay on my back sometimes when I touch my lower belly where baby is (I can feel her bulging out when I lay on my back) but it is sore to the touch when I touch my belly where she is. Is this normal ?