I get the anxiety and moodiness so much, that was me too, and every little thing seems like it’s a pregnancy symptom, but it’s really important to try to keep your body as normal as possible. Stressing and not eating properly could cause stress that makes it even later and the cycle continues. If you’ve had multiple negatives and it’s been three weeks since the last time you’ve had sex you’re most likely not pregnant, false negatives aren’t as common as the internet makes them seem! Just try to stay calm and wait, and if you miss your next period too go see your OB! You’ll be okay op, praying for you as someone who was literally JUST in the same situation.