Feeling strange maybe going crazy

I been feeling strange lately and my cycle had been wacky this last month with two periods, but I truly feel strange. I been very bloated with some slight nausea, diarrhea and burping has been increasing more than ever before. But all the tracking apps say I should be in ovulation time. I curious about testing because I hope for a BFP but I think it will tell me negative. I feel like I am going crazy!!