1 month or so ago i had a miscarriage then

Patient: 1 month or so ago i had a miscarriage then i got my period the 11th at 2am and had sex the 12th at night and forgot to use protection.. I believe it was friday or saturday that i hadnt eaten anything that day and when i did at night, i had diarrhea which smelled like food and pieces of food were in the diarrhea. Im worried i might be pregnant but i dont want to be. I also have and irregular period i get my period every 2-3 months sometimes i go a month or two or three with a period every month.

Doctor: