Lots of bloating/sharp stomach pain

Hi all. I’m 20 weeks pregnant and for the last few weeks have been dealing with a lot of bloating, gas and sharp stomach pains in the afternoons. This starts at around 3pm and has usually settled/calmed down by 10pm. My stomach is flat in the mornings and I look absolutely huge while I’m experiencing the sharp pains - then by the time I go to bed it’s settled a little bit and my belly looks normal again. I wondered if anyone has experienced the same? Is this going to subside at any point or is this most likely going to last my whole pregnancy?