Birth control question

Abi

So I started taking birth control back in December, and I haven't had any problems with it until now. The last couple of times I've had periods, I've had a ton of blood clots and like flecks of blood when I pee. It doesn't seem serious, but it's just weird since I never used to get them before. I've also started getting yeast infections frequently, like once a month. Are either of those things related to bc, or is it something serious?