Slight dizziness and often feels sleepy and listless at 30th week

Hi everyone, just wanna ask if it's normal that i'm feeling listless these days. Yung parang walang energy at nagsstart na dn to feel dizzy or slightly nawawala sa center of gravity. Due po ba sa growing baby and belly and added weight? Madalas na rin akong antukin nitong mga araw malamig man o mainit ang panahon especially after having a meal or just idling around. P.S. Next scheduled check-up ko is at the end pa ng Oct. 2020 since total lockdown sa area namin. Any safety precautions po at this stage? Thank you. #FirstPregnancy