Leg pains?

I'm only 6+4 and I've been having super dull, to super tight, leg pains. It feels like I've been running almost every night. It's almost the same type of pains I got when I did soccer and teakwondo when I was younger. My hamstrings are unusually tight, but my calves feel super achy. Also, I have rheumatism in my knees, and I've been having a lot of flare ups, so bad that yesterday I couldn't put any weight on my right knee, and it was painful to bend. This has only started and been going on for the past three days. I only find comfort in laying down all the time, and that's a no go because I have things to do! At this point not even Tylenol has been helping.

Should I go to the doctor? Or is this just normal? This is my first pregnancy, and I'd usually ask my mom about this but I'm waiting until mother's day to tell her. ❤️