Introval Issues

Oj
So, I'm using Introvale (a hormone pill) as my BC. It's (apparently) the generic version of what I was prescribed by PP (Chateal) and is about a third the price, hence my switch. However, while Chateal was literally the most amazing thing I've ever used, Introvale is messing up my reproductive system. 
I have period symptoms (minus bleeding) 7/8 of the time (which I was blissfully free of while on Chateal)and am bleeding for the second time since starting on it while on active pills, which is annoying af and preceded by about half a week of heavy spotting. 
I have a 3 month refill, but I'll probably switch back to Chateal once I finish it. Has anyone else had this issue with this particular pill? Is this supposed to be normal for Introvale? I can't afford to pay for a PP visit until June, which is why I'm asking you guys.