Over the course of six months, my wife and I have had been having slight problems and we thought that swinging would help things out. First we try our attempt at my first bi encounter which didn't last long and (giving m2m oral with protection)...after three months or maybe a week shy of three months, we decided to get tested and came with a non reactive. Four months later, we decide to bring another girl into a relationship and all she does is kiss and feel up the girl. However she wanted to watch me, have sex with another girl. (this is two months and 2 weeks ago) I couldn't get into it, so I pulled the condom off, after realizing I wasn't into it and slightly disgusted by the fact that apparently her friend started her period (which my girl laughed) I realize that condom protected sex is safe sex and so is oral. but At this time (in the last three days) she has had diareeha non stop and we've both been a little worried. Her doctor said as long as we use protection we shouldn't have to get tested. But I'm not convinced and I need a little explanation or help. I would appreciate any advice you could give.
Thank you for your time.