Voting Question: Can diet pills and weight loss teas and cold medicine mess up your period?

ive started taking the accia berry pills and the wu yi tea a month before my next period was due but when it finaly came 2 days ago it was light and now it seems to be stoping. i had horrible cramps like i usually do so i took pamprin and it help a little, i also got kinda sick a day before my period and took medicine. my periods arent long but theyre pretty heavy on the first day and normal the next few days but im really worried, is there something wrong or is this normal im really freaking out !!