Pain in stomach

Emma

I’ve been having cramps in my stomach around my bellybutton, to the left mostly. My back hurts. I’ve been so constapated too. It’s annoying. The pain has gotten worse in the past 3 days. I had a yeast infection that has now been treated after a month. My diet contains a lot of sugar and red meat. I am sexually active and on birth control. I take cranberry pills and antidepressants. I don’t know what to do? Has anyone else been in this position?