Talk to Gynecologist on Weakness

slam doctors.. i have 21 month old baby again got positive pregnancy test like 5/6 week pregnant.. Mera beta breastfeeding p tha abhi b peeta hy... koi issue to nhi hy agr wo 1 month or pee ly.. din m to km kr dia hy lekin rat ko bohat tng krta hy.. mjhy khud kmr or legs m pain rehny lgi hy.. jese tangen akr jati hn.. kuch dair hi pani wala koi kam kr lun to zyada akr jata jism.. diet b sahi hy i think.. yogurt.. omelette and chapati ka nashta krti hn.. dopehar m fruits.. rat m 1 roti /salan or 1 glass doodh.. chay kbhi kbhi use krti hn.. or kya improve krun k weakness na ho.. ? shukriya