Too soon to feel

So back story, I’m a mom of littles and suffer from general anxiety. Lately, I’m irritable and can barely make it through the day my anxiety is so bad. Also, I feel like I’m easy to set off. My doctor prescribed me Buspar to take as needed. I’ve been taking it twice a day for 3 days now and already feel soo much better. Is it possible to already feel the effects? TIA