I have a pool party at my school in 2 days!!! URGENT!!!?

ok i bought a new bikini and i swim evry day for 1.5 hours... but my tummy is looking kinda squishy right now. can i get some y abs or a nice flat stomach by the two days? help please! if i cant, then tell me what i CAN do! alright... thank you!!!! soo much the winner gets 5 stars!!! <3