The choice to go without condoms is up to you, but of course the pill isn’t 100% effective, the condoms give additional protection, also bare in mind that you would need to make sure to use the pill correctly as for example if you miss a pill or are ill it won’t work so condoms will be your only protection. Condoms protect against STI’s so make sure the both of you get tested for STI’s, if you and your partner are not long-term, if you are young or immature the fact is that it’s not worth the risk as all it takes is for him to cheat on you once and you could catch anything. Also remember that things such as bacterial vaginosis and urinary tract infections can be passed from partner to partner so you will need to be knowledgeable enough about your body to spot these infections and make sure to either not have sex or use protection during the time you have the infections. I’d also point out that safe sex is more than just using condoms, make sure you know how to spot problems with each others sexual health, use other safe sex tools such as latex gloves or clingfilm for certain sexual activities, know that condoms are sometimes necessary for example during anal sex to protect him against infection. It’s a hell of a lot to consider, it’s up to you what you do but make sure that you know how to care for each others sexual health in anyway and be careful as even the most seemingly loyal and loving boyfriend can cheat.
As for condoms irritating your vagina – why do they irritate your vagina and what have you done about it? Chances are you will have to use condoms again sometime so you will need to find the cause of the irritation and do something about it. Another option is femidoms they may not cause you irritation, they are also better as they conduct body heat better, he won’t have to pull out after ejaculation, more comfortable for him and they protect you from more STI’s than condoms do. It may be that condoms irritate you due to lack of lubrication, which is another vital safe sex tool, it may even be that condoms aren’t the problem but lack of lubrication and sex prior to penetration is the problem. It could be that you are allergic to certain types of condoms or brands so try different types of condoms to see if they all have this problem, particularly look at condoms that do not contain latex. Another common problem a lot of women have is an allergy to the spermicide nonoxynol-9 so watch out for condoms that do not contain this ingredient.