Welcome to the forum. What saan says is partly right - you need a test -
but the golden rule here is when in doubt - always see a doctor!
Unprotected sex can give you more than worries about getting pregnant, even if you take the pill - as the pill is sensitive to antibiotics, and if you get the stomach flu and have to vomit, then naturally the pill will not work here either.
You need to see the doctor, change boyfriends (especially if he refuses to use a condom), get tested for other infections and/or disease he could have given you that you did not know of, and then start taking better care of your body from now on. After all, it's the only one you've got, and you need to be more responsible about it.
In today's world, you need education before practice of any type, and with sex, it's more important than ever now.
Hope for you that everything will work out this time, and that it's just a lesson you've learned and hopefully never will forget.
Good luck and please keep us posted.

Better Safe, than Sorry! Again, good luck!