Bad Left Side Pressure Cramps...?

Starting last night I have been having some pressure cramps on the left pelvic side... I'm terrified it's an ectopic pregnancy. I made 5 weeks yesterday and have had two previous miscarriages none were ectopic though! Has anyone ever experienced this and had a good pregnancy? I have my first Ob appt on the 14th of October. I am also taking 400mg of progesterone a day bc my levels were a bit low. Not sure if that can cause cramps! No bleeding or any other symptoms. Thanks in advance for any advice!