Good evening girls! Can I drink or who drank tea for weight loss while…

Good evening girls! Can I drink or who drank tea for weight loss while breastfeeding? I'm worried about constant constipation since my school days, can say chronic constipation. Somewhere four years ago I drank this tea and started loose stools after a few days. As it was inconvenient at work - I abandoned it. No diets, special products, even medications don't help anymore. Now I want to ease my life with tea. Plus after childbirth, hemorrhoids appeared as soon as I went up, it came out immediately.