Had Partially Protected Sex. Sore Breasts, Hard Nipples, Discharge, Nausea, Cramps, Back Pain. Worried

so me and my boyfriend were with each other over a month ago and he touched my vagina and he touched his dick and he said he had nothing on his hands before he touched me nor did he touch himself before touching me. when i was touching him i got a little pre cum on my hands the last time i touched him and i didnt touch myself after that at all 2 hrs later i went to use the bathroom and then wash my hands they felt dry and sticky i got my period 7 days later but and finished on the fourth of july but now ive been having symptoms of sore breasts and hard nipples and discharge nausea and ive also thrown up because of coughing and choking but that was only twice. i havent been feeling that much cramps just a little bit but i have experienced back pains i should be excpecting my period tomorrow but i also have an irregular period im worried any help or ideas.?