IS IT SAFE???

im 5 weeks preggy and feeling ko hirap ako dumumi, feeling ko lagi matigas or constipated ako, is it okay to use natural laxatives such as tea like biofitea/senna leaves to improve my digestion? ginagamit ko un dati nung di pa ako buntis and sobrang sakit tlga ng tyan sa umaga pero easy na lumalabas ung dumi. safe prin ba sya na gamitin ngayon? thank you in advance ❤️