Braxton Hicks or not?

Hi everyone, I'm 23yo and 21w6d pregnant with my first baby. Every time I've gotten checked up baby is perfectly healthy and fine. A couple of weeks ago I started getting what I assume was braxton hicks contractions; just felt tightening or like period cramps which wasnt unbearable just uncomfortable. I have been trying to drink as much water as i can and relax but i am in several very very stressful situations and i have very bad anxiety and depression, i do my best but life is often too much. Anyway the past 3 or so days these contractions have been getting more intense (sometimes unusable to stand up straight) and happening more often even after drinking water and trying to change positions or walk around. Today it got so bad that I almost felt an urge to push i guess? not sure how to explain it but i had peed not even 5 minutes before the contraction started (it was slightly tinged yellow-greenish) and then after it started i had to pee again but it seemed to kind of just fall out of me and was clear, and i felt a lot of pressure almost like i had to poop but not quite. My question for everyone is how bad can BH contractions get? I'm starting to worry that everything going on is kind of sending me into preterm labor but i dont know when to worry about it. i have an obgyn appt Tuesday (its Sunday) but should i call and freak out now?