Hi. I Have Generally Had Weight Issues When I Was

Hi. I have generally had weight issues when I was young but since having a low calorie diet and drinking lots of green tea I managed to reduce me eight and maintain it. I then found some acai berry with green tea pills which I hav been takin for 2 years on and off. I revelry started again about 3 weeks ago and after 2 days of Taking it I felt my stomach expand in just 2 days!! It has been the same since and I feel so bloated all the time, my clothes don't fit right, they are so much tighter and generally feel like I'm putting weight on. I don't understand, this has never happened before and I feel so uncomfortable with my big stomach which happened so suddenly. My trouser button doesn't close and this all happened in 2 days?!! Even drinking green tea isn't helping. I don't know what's going on, please help!!