Tri-sprintec

My doctor just prescribed me tri-sprintec to regulate my periods since I have PCOS and I'm pretty nervous to take it, I haven't been on any birth control and I read things about getting blood clots while on birth control and I'm already not the healthiest weight( trying to lose it though) and I also read pretty bad things about tri-sprintec, anyone else take it and have bad experiences? Or has it helped any of you? any response is appreciated