Not exactly sure.

Before I buy a test I just kinda hear from ya a little.. ok so last month right before my period started I took 2 pregnancy test and they both came back negative.. the next day aunt flow came.. later on during that week I started getting bad heart burn.. and every since I've been getting every so often.. also for like the past 2/3 weeks my dogs have been acting out.. I have one that is 5 years old and she been chewing on everything.. shoes, chargers and so on she never done this at all.. my other dogs is using the bathroom in the house.. I took her to the vet thinking she had a bladder issue.. but the doc said no. She was healthy.. so I let it be.. I was talking to my co worker bout this.. and the first thing she asked me was if I could be pregnant.. I told her no.. she smiled and walked away.. so has this happened to anyone before cuz I'm so lost