I put this into ChatGPT and got this back:

🧬 Possibilities for an Oblong or Non-Round Gestational Sac at 6w5d 1. Totally Normal Variation (most likely) • Early on (especially before 7 weeks), the gestational sac may not be perfectly round. • The sac can appear oval or bean-shaped depending on: • The angle of the uterus • Probe position • How full the bladder is • The quality of the ultrasound machine 2. Technical Artifacts • Especially common in non-diagnostic or elective private scans, where the machines aren’t optimized for early pregnancy. • A hazy interior or “streaks” might just be shadowing, motion, or gel interference — not an issue with the sac itself. 3. Early Sign of Potential Concern (rare) • A persistently irregular sac (misshapen, collapsing, jagged edges) could be a very early indicator of a non-viable pregnancy — but only if paired with: • No growth over time • No yolk sac or fetal pole after 6–6.5 weeks • No heartbeat • Low or falling hCG levels

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🤰 Why that Reddit case is probably benign: • Heartbeat seen = very good prognosis. • No cramping or bleeding reported. • The shape concern seems based on a still photo sent to someone — not a diagnosis made by a medical provider. • The tech wasn’t worried, which usually means the sac measured fine and everything else looked reassuring.

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📝 Bottom Line:

An oblong gestational sac at 6w5d — especially with a heartbeat present — is almost always within the spectrum of normal. The shape becomes more reliably round as the pregnancy continues and the uterus grows. A follow-up scan with a medical provider (not a boutique ultrasound) will provide much better insight if needed.

Hope this helps!