Living with STDs

Hi. I am 26 years old and suffering from some vaginal infections that I may say “normal conditions”. I was browsing the google on what “STD” means. Its symptoms, cause, treaments, overview or even “HIV”. I have a boyfriend for almost 3 years, and we had contacts of course. Like 3 -4 times a month. During those 3 years, I had mistakenly contactsd with others, 2 men. But the contact (sex) is not in a week, its like with long interval.

I am shaving my vaginal hair before like almost every month or every 2 monhts. And its itchy when the hair are growing,,and the more I scratch it, I am getting some little wounds due to too match scratch im doing. I felt one time after having sex, my thighs are pain and the middle area of my vagina is pain too. I was just thinking that because I just finished the contact then after a day, its back to normal.

I will feel the itchiness if I will get my period a week before then, I will get my period.

I was reading the symptoms of STD and HIV, and there is no any signs that I have it. But only the itchiness I am feeling.

I want to ask, if what Im experiencing is normal and will there might be an effect of having those diseases? because i am afraid to consult a doctor, I am afraid for the result.

I hope you can give me an advise for having a safer sex.