hard to know for sure without being able to see them. the most common bumps in this area are genital warts - again, may not be, but is very common. condoms do not provide 100% protection from any STD, but I do commend you on faithfully using them. Have your doctor take a look so you know for sure.
I would like to add, that many women dismiss bumps and lesions on the genital region as shaving bumps. I'm not excluding that, nor am I excluding irritation. However, given this forum where I cannot do an exam, I cannot tell you to dismiss it either. It should be evaluated so you know exactly what it is - that's all. Ok?