Oo normal lang yan sa third trimester, lalo na by week 36, marami sa amin na nag-experience ng swelling sa paa at kamay dahil sa fluid retention at pressure ng baby! One of my mum friends even had to remove her wedding ring by month 8 kasi tumaas ang swell, pero bumalik lahat to normal after delivery, don't worry. But since it's your first time, mas ok kung i-mention mo ito sa OB mo next check-up para makita kung normal swelling lang or kung may other concerns, lalo na kung suddenly tumaas or may ibang symptoms, better safe than sorry talaga.