Symptoms maybe?

So we're ttc and have been for months and now I'm scared to test bc for the last 8 months they have been neg and I get all sad and depressed! For some reason I feel like this might be it but I don't wanna test and it be neg again and I get all sad! I've been nauseous for days and my indigestion is off the chain plus my boobs hurt so bad sometimes I wanna cry! What should I do?