Stretch mark or vein?

I'm guessing it's a stretch mark but I'm not sure.  A lot of my veins are visible now but this looks slightly darker than the veins 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors