Girls, hello everyone! I'm 7 weeks pregnant. Yesterday, my lower abdomen…

Girls, hello everyone! I'm 7 weeks pregnant. Yesterday, my lower abdomen got very bad, like during my period, but much worse, even sweating! I took one NyQuil, now it occasionally stings! But there's nothing, not even blood or discharge. I have an appointment with a gynecologist tomorrow, anyone had this? Can you tell me what it means? I'm really worried, everything is written differently online.