I was recently dating a guy who told me he only had sex with 2 other girls and who i really trusted and so we have sex about 6 times in the past month about half and half with protection and without but he never ejaculated inside of me but I recently found out that he has had a girlfriend who he has also been having sex with during our time together and their 3 years together. He also cheated on her several times and several weeks ago I had diarrhea that lasted about 2 days and a cough and stuffy nose that lasted about 2 weeks, also my underarm hurt for maybe a day at one point during this time...Also I never have acne and ive had about 3 pimples in the past 2 weeks...are the symptoms of acute HIV and should i be worried?