My period is now two days late

Just trying not to get my hopes up. I started spotting today wiped and seen blood and haven’t seen it since! I had sex no blood on penis or on me 🤷🏻‍♀️ fingers crossed I took pregnancy test I keep getting invalids or question marks. I’m not sure if the medication is taking is affecting the results I had the flu but I’m now down to a basic cough and no voice... oh sex I was trying not to moan I sound like a man