TTC PCOS

Natalie
Hey all, 
I've been TTC for around 8 months. I have PCOS and I'm slightly overweight . I done two cheap home pregnancy tests but both have come up negative however I'm getting cramps, sore breasts and I'm feeling quite bloated and the occasional periods of feeling sick. Do you think O should take another test or is this just noram for someone with PCOS. I'm 22 years old and apart from being slightly overweight I consider myself a healthy young lady.